Lesson 25: Sentence Structure & Word Order

Focus: Connectors · Comma Logic · Word Order · Adverbs · Because vs Because of · Too & Enough

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Vocabulary: Logic, Connection & Flow

Context: We use these words to build arguments, explain decisions, and describe sequences of events — essential for adult professional communication.

1. Coordinating Connectors

And/ænd/И (addition)

But/bʌt/Но (contrast)

Or/ɔː/Или (choice)

So/səʊ/Затова (result)

However/haʊˈev.ər/Обаче (formal 'but' — new sentence)

Although/ɔːlˈðəʊ/Въпреки че (surprise/contrast)

Therefore/ˈðeə.fɔː/Следователно (formal 'so')

Besides/bɪˈsaɪdz/Освен това (adds extra reason)

Instead/ɪnˈsted/Вместо това

2. Causal Words

Because/bɪˈkɒz/Защото (+ пълно изречение)

Because of/bɪˈkɒz ɒv/Поради (+ съществително)

Reason/ˈriː.zən/Причина

Cause/kɔːz/Причина / Причинявам

3. Sequence & Narrative

First / Firstly/fɜːst/Първо

Then/ðen/След това / тогава

After that/ˈɑːf.tə ðæt/След това (next step)

Next/nekst/После (следващата стъпка)

Finally/ˈfaɪ.nə.li/Накрая

4. Adverbs of Frequency

Always/ˈɔːl.weɪz/Винаги (100%)

Usually/ˈjuː.ʒu.ə.li/Обикновено (80%)

Often/ˈɒf.ən/Често (60%)

Sometimes/ˈsʌm.taɪmz/Понякога (40%)

Rarely/ˈreə.li/Рядко (20%)

Never/ˈnev.ər/Никога (0%)

5. Adverbs of Degree

Too/tuː/Прекалено (negative — a problem)

Enough/ɪˈnʌf/Достатъчно (sufficient)

Very/ˈver.i/Много (intensifier — neutral)

A lot/ə lɒt/Много (after the verb — never between verb and object)

6. Decision-Making Verbs

To argue/ˈɑːɡ.juː/Споря

To discuss/dɪˈskʌs/Обсъждам

To refuse/rɪˈfjuːz/Отказвам

To accept/əkˈsept/Приемам

To realise/ˈriː.ə.laɪz/Осъзнавам

Decision/dɪˈsɪʒ.ən/Решение

Opinion/əˈpɪn.jən/Мнение

Grammar Lab

Seven sections. Read every explanation carefully before the exercises. Each section has an Easy exercise and a Challenge exercise.

1. Compound Sentences — And, But, Or, So

We use coordinating conjunctions to join two ideas in the same sentence. Each word signals a different logical relationship. The most important professional rule concerns the comma: a comma is only required when the conjunction joins two independent clauses — that is, two parts that each have their own subject and verb.

The Four Connectors

AND — addition: "He is rich and famous."
BUT — contrast: "She tried hard, but she failed."
OR — choice: "Tea or coffee?"
SO — result: "I was cold, so I put on a coat."

⚠️ Comma Logic — The Key Rule

Comma required when both sides are full sentences (Subject + Verb):
✅ "The salary is high, so I will accept." (two subjects)
No comma when the second part has no new subject:
✅ "He is experienced and performs well." (one subject)
❌ "He is experienced, and performs well." (wrong)
💡 Practical rule: In adult writing, but and so almost always take a comma — because they almost always introduce a new subject and result. When in doubt with but or so, use the comma.

Type	Structure	Comma?	Example
Compound	[S + V], [Connector] [S + V]	✅ Required	"I was tired, so I went home."
Simple + list	[S + V] [Connector] [V/Object]	❌ Not needed	"I was tired and went home."

📝 Easy: Select the correct connector for each sentence.

1. I like football ___ I also like tennis. (addition)

2. I like football, ___ I don't like tennis. (contrast)

3. It was raining, ___ I stayed home. (result)

4. Do you want tea ___ coffee? (choice)

5. The salary is high, ___ the hours are long. (contrast)

🎯 Challenge — Comma Logic: Select whether a comma is needed (✓ comma) or not (✗ no comma).

1. "The candidate has experience and performs well." — Comma needed?

2. "The salary is high so I will accept." — Comma needed?

3. "She is intelligent and hard-working." — Comma needed?

4. "It was late so we left the office." — Comma needed?

5. "He refused the offer but explained his reasons." — Comma needed?

2. Complex Sentences — Although

Although is more formal and precise than "but". It introduces a surprising contrast — something unexpected given what came before. Unlike "but" (which joins two equal clauses), "although" creates a dependent clause: the although-clause cannot stand alone as a sentence.

Position 1 — Although at the start

Put a comma between the two clauses.
"Although it rained, we played football."
"Although the job is perfect, the hours are long."
✅ Although + Subject + Verb, main sentence.

Position 2 — Although in the middle

No comma needed.
"We played football although it rained."
"The commute is manageable although it is long."
✅ Main sentence + although + Subject + Verb.

Although vs However vs But

But — joins inside one sentence: "…, but…"
However — starts a NEW sentence: "…. However, …"
Although — dependent clause, can go first or second
All three = contrast, but different grammar positions.

📝 Easy: Select the correct contrast word for each sentence.

1. ___ it rained, we played outside. (start of sentence)

2. I like him. ___, he talks too much. (formal, new sentence)

3. I am tired, ___ I can't sleep. (informal, same sentence)

4. She bought the car ___ it was expensive. (middle position)

5. It is expensive. ___, I will buy it. (new sentence, formal)

🎯 Challenge: Rewrite each pair using the word shown. For [Although], write one sentence. For [However], write two sentences separated by a full stop.

1. [Although — start] "The job pays well. The commute is long."

2. [although — middle] "I passed the exam. I didn't study."

3. [However] "He is very experienced. He didn't get the job."

4. Translate: Въпреки че съм уморен, продължавам да работя.

5. Choose correctly: "___ she is old, she runs fast." — Although / However / But?

3. Word Order — SVO, Place & Time

English word order is strict. Unlike Bulgarian, you cannot move parts of the sentence freely. There are three essential rules: the SVO rule, the Place-before-Time rule, and the rule for adverbs like "a lot" and "very much".

Rule A — Subject + Verb + Object

Never put anything between the verb and its object.
S → V → O → [Place] → [Time]
✅ "I drink coffee every morning."
❌ "I drink every morning coffee."
✅ "She speaks English well."
❌ "She speaks well English."

Rule B — Place BEFORE Time

If both are in the sentence: Place first, then Time.
S → V → O → [WHERE] → [WHEN]
✅ "I went to the office yesterday."
❌ "I went yesterday to the office."

Rule C — "A lot" & "very much"

These always go at the end — after the object.
S → V → O → [a lot]
✅ "I like my job a lot."
❌ "I like a lot my job." (Bulgarian error)
✅ "She enjoys the work very much."
❌ "She very much enjoys the work." (too formal)

📝 Easy: Select the correct word order.

1. He ___

2. She went ___

3. I like my current job ___

4. We had a meeting ___

5. They speak ___

🎯 Challenge: Unscramble the words into a correct English sentence. Type only the part after the subject (shown).

1. She / coffee / drinks / every / morning → She

2. arrived / He / at the office / yesterday → He

3. her / a lot / She / likes / job → She

4. the meeting / They / had / on Friday / in Plovdiv → They

5. Fix the Bulgarian error: "I enjoy very much my work."

4. Adverbs of Frequency — Placement Rules

Adverbs of frequency (always, usually, often, sometimes, rarely, never) tell us how often something happens. Their position in the sentence follows a strict rule called mid-position: they go before the main verb, but after the verb to be. This is a very common error for Bulgarian speakers.

Rule: Before the main verb

S + [Adverb] + Verb + …
✅ "I usually finish work at 5 PM."
✅ "She always checks her emails."
✅ "He never eats breakfast."
❌ "I finish usually work at 5." (wrong)

Exception: After the verb TO BE

S + BE + [Adverb] + …
✅ "I am always available on Mondays."
✅ "The office is usually busy on Fridays."
✅ "She is never late."
❌ "I always am available." (wrong)

Frequency Scale

🟢 always — 100%
🟢 usually — ~80%
🟡 often — ~60%
🟡 sometimes — ~40%
🔴 rarely — ~20%
🔴 never — 0%

📝 Easy: Select the correct position for the adverb of frequency shown.

1. [always] "I ___ drink coffee in the morning."

2. [usually] "She is ___ available after 3 PM."

3. [never] "He ___ eats breakfast before work."

4. [often] "They ___ have meetings on Friday afternoons."

5. [sometimes] "The train ___ late." — (to be sentence)

🎯 Challenge: Rewrite each sentence placing the adverb in the correct position.

1. Insert [usually]: "I finish work at 6 PM." → I

2. Insert [always]: "She is on time for meetings." → She

3. Insert [never]: "He checks his phone during a meeting." → He

4. Fix the error: "I check always my emails at 9 AM." → I

5. Translate: Мениджърът понякога закъснява.

5. Causal Logic — Because vs Because of

Both words express a reason, but they require different grammar after them. This is one of the most frequent errors for adult learners, especially in written and professional contexts. The test is simple: what comes after? A full sentence with a verb → use because. A noun or noun phrase (no verb) → use because of.

Because — + Full Clause

Because + Subject + Verb (+ Object)
✅ "We accepted the offer because the salary was competitive."
✅ "I stayed home because it was raining."
✅ "She left early because she was tired."
❌ "I stayed home because of it rained." (wrong)

Because of — + Noun / Noun Phrase

Because of + Noun / Noun Phrase (no verb)
✅ "We accepted the offer because of the competitive salary."
✅ "I stayed home because of the rain."
✅ "She left early because of a headache."
❌ "She left because of she was tired." (wrong)

Quick Test

Look at what comes next:
"… because it rained" — verb → ✅ Because
"… because of the rain" — noun → ✅ Because of
Same meaning, different grammar:
"because he was late" = "because of his lateness"

📝 Easy: Select "because" or "because of" for each sentence.

1. I stayed home ___ the bad weather. (noun follows)

2. I stayed home ___ it was raining heavily. (full clause follows)

3. She accepted the job ___ the high salary. (noun follows)

4. He was late ___ the train was delayed. (clause follows)

5. The project failed ___ poor communication. (noun phrase)

🎯 Challenge: Rewrite using the form shown in brackets. Keep the same meaning.

1. [because of] "He was late because the traffic was bad." → He was late

2. [because] "She refused the job because of the long commute." → She refused the job

3. Translate: Приех работата поради добрата заплата.

4. Fix the error: "I was tired because of I worked 10 hours."

5. Fix the error: "She left because the stress."

6. Narrative Sequencing — First, Then, After that, Finally

In professional and narrative communication, we need to describe a sequence of steps or events. Using "and" repeatedly ("I did this and I did that and then I did that") sounds childish. These sequencing adverbs organise information clearly and are used in emails, presentations, reports, and storytelling.

The Sequence Markers

First / Firstly — Step 1
Then / Next — Step 2 (or 3)
After that — Step 3 (after something specific)
Finally — Last step
All of these can start a sentence + comma, or connect mid-sentence.

Example: Job Process

"First, I sent my CV to the company."
"Then, I received an invitation for an interview."
"After that, I met the manager."
"Finally, they offered me the position."
Note the comma after each marker at the start.

Example: Daily Routine

"First, I wake up at 7 AM."
"Then, I drink coffee and check emails."
"After that, I go to the office."
"Finally, I return home at 6 PM."

📝 Easy: Select the correct sequence word. The position in the story is shown.

1. ___, I prepared my CV. (Step 1)

2. ___, I sent it to five companies. (Step 2)

3. ___, I received a phone call for an interview. (Step 3)

4. ___, they offered me the job. (Last step)

5. Which word means "накрая" in a sequence?

🎯 Challenge: Type the missing sequence word for each step in Tom's working day.

1. "_____, Tom arrives at the office at 8:30 AM." (Step 1)

2. "_____, he reads his emails and makes a coffee." (Step 2)

3. "_____, he has a team meeting at 10 AM." (Step 3)

4. "_____, he leaves the office at 6 PM." (Last step)

5. Translate: Първо се събудих, след това изпих кафе, и накрая тръгнах за работа.

7. Adverbs of Degree — Too and Enough

Too and enough express a degree or level relative to what is needed or acceptable. They have opposite meanings and very different positions in a sentence. These are essential for expressing professional assessments: whether a salary is acceptable, a commute is manageable, or a deadline is realistic.

Too — Always a Problem ⚠️

Too always signals a negative situation — a limit that has been crossed.
too + adjective = PROBLEM
✅ "The commute is too long." (I cannot accept this)
✅ "The salary is too low." (I cannot accept this)
⚠️ "The salary is too high" = sounds like a complaint to a native speaker — as if the company cannot afford it. Use very for positive intensity instead.

Too vs Very — Critical Difference

Too = negative excess (a problem)
Very = neutral intensity (no problem)
✅ "The salary is very high." (great news!)
❌ "The salary is too high." (sounds like a problem)
✅ "The commute is very long." (describing, neutral)
✅ "The commute is too long." (it's a deal-breaker)
Rule: Use too only when the result is unacceptable.

Enough — Sufficient ✅

Enough always comes after the adjective.
adjective + enough = OK / sufficient
✅ "The office is close enough." (acceptable)
✅ "The salary is good enough." (acceptable)
❌ "It is enough good." (wrong word order)
Memory: too → BEFORE adj. | enough → AFTER adj.

📝 Easy: Select "too", "very", or "enough". Remember: too = always a problem / very = neutral intensity / enough = sufficient (comes after).

1. The commute is ___ long. I cannot accept the job because of it. (problem)

2. The salary is ___ high! I am excited — this is great news. (positive, neutral)

3. The salary is good ___. I am happy to accept. (sufficient)

4. The workload is ___ heavy. I cannot finish everything. (a deal-breaker)

5. She is experienced ___ for this position. (she meets the requirement)

🎯 Challenge: Choose the correct word (too / very / enough) and write or fix the sentence.

1. Problem — The rent is so high you cannot pay it. → The rent is

2. Good news — The bonus was surprisingly high. You are happy. → The bonus was

3. Sufficient — The office is an acceptable distance away. → The office is

4. Fix: "The job is enough good for me."

5. Translate: Заплатата е много висока — радвам се! (Use: very, not too)

Tense Writing Practice

Five exercises, 10 sentences each — all mixed tenses.

Put the verb in brackets into the correct tense.

Exercises (20 Sets)

All sets practise the grammar from this lesson: connectors, comma logic, although, word order, adverbs of frequency, because vs because of, sequence, and too/enough.

Gerund or Infinitive?

Five mixed exercises. The verb before the gap decides the form.

Key verbs with gerund: enjoy · finish · like · love · hate · avoid · mind · stop · practise · keep · suggest · consider
Key verbs with infinitive: want · need · decide · hope · plan · manage · promise · agree · refuse · expect · offer · learn · forget · remember

Key Word Transformation

How it works: You are given a sentence and a key word. Rewrite the sentence so it means the same, using the key word. The beginning is given — you write the rest. Punctuation counts.

⚠️ Do not change the key word. Check spelling and punctuation before clicking Check.