Chapter 5 · Grammar · 6 questions in the paper · 11 min read
Clauses, Conditionals and Verb Patterns
What the syllabus asks for 3
- Relative pronouns and relative clauses
- Conditional sentences
- Causative verbs, to-infinitives and gerunds
About six English questions test how clauses and verbs fit together: which relative pronoun, which conditional, whether a verb takes -ing or to, and the causative have/get something done. The patterns are finite, so a table and some practice settle them.
- Relative pronouns: who (person, subject), whom (person, object), whose (possession), which (thing), where, when.
- Conditionals: zero, first, second, third; unless = if not.
- Causatives and verb patterns: have/get something done, make/let/have + bare verb, verbs followed by -ing or to.
5.1 Relative pronouns and relative clauses
| Pronoun | Use | Example |
|---|---|---|
| who | person, subject | The man who lives next door is a doctor. |
| whom | person, object | The woman whom I met is my teacher. |
| whose | possession | She is the girl whose father is a pilot. |
| which | thing | The book which I bought is interesting. |
| that | person or thing, defining only | The book that I bought … |
| where / when | place / time | This is the house where I was born. |
A non-defining clause is set off by commas and never uses that: Kathmandu, which is the capital, is crowded.
5.2 Conditional sentences
| Type | Form | Example |
|---|---|---|
| Zero (facts) | if + present, present | If you heat water to 100°C, it boils. |
| First (real future) | if + present, will + verb | If it rains, we will stay home. |
| Second (unreal present) | if + past, would + verb | If I were a bird, I would fly. |
| Third (unreal past) | if + past perfect, would have + V3 | If he had studied, he would have passed. |
Unless means if … not: Unless you hurry, you will miss the bus. Use were for all persons in the second conditional. Inversion: Had I known = If I had known. I wish I had a car (unreal present uses the past).


5.3 Causative verbs, to-infinitives and gerunds
- Causatives: have/get something done (I had my hair cut); make/let/have someone + bare verb (She made me laugh; The teacher let them leave); get someone + to-verb (I got the mechanic to repair it).
- Verb + -ing: enjoy, avoid, finish, mind, suggest, consider, practise, admit, deny, give up, can't help, look forward to, be used to, it's no use, it's worth.
- Verb + to: want, decide, hope, plan, promise, refuse, afford, manage, learn, agree.
- Meaning changes: stop doing (quit) vs stop to do (pause in order to); remember/forget doing (past event) vs to do (task). Would rather is followed by a bare verb.
5.4 Eight traps in clauses, conditionals and verb patterns
These items test one rule each, so the traps are rules that students half remember.
- Who is the subject, whom is the object. In "The woman whom I met", I is already the subject of the clause, so the pronoun is the object whom (Fig 5.1). Test by replacing the pronoun with he or him. If him fits, use whom.
- Do not use that in a non-defining clause. "Kathmandu, which is the capital, is crowded" needs commas and which. A defining clause has no commas and may use that. Remember that whose shows possession for both people and things.
- Do not put will in the if-part. Write "If it rains, we will stay home", not "If it will rain". The first conditional uses present in the if-part and will in the main part (Fig 5.2). The same holds for when, as soon as and unless in future meaning.
- Use were for every person in the second conditional. "If I were a bird, I would fly" is correct for I, he and she. The second conditional talks about an unreal present, so the verb is past. After wish use the same pattern: I wish I had a car.
- The third conditional needs past perfect and would have. "If he had studied, he would have passed" talks about the past that cannot be changed. Do not use would have in the if-part. The inverted form Had he studied means the same.
- Unless already means if not. "Unless you hurry, you will miss the bus" equals "If you do not hurry, you will miss the bus". Do not add another not: unless you do not hurry is wrong. Use unless only with a positive verb.
- Learn which verbs take -ing and which take to. Enjoy, avoid, finish, mind and suggest take -ing; want, decide, hope, plan and refuse take to (Fig 5.3). Make and let take a bare verb: She made me laugh. Look forward to is followed by -ing, because to is a preposition.
- Check the meaning change. He stopped smoking means he quit; He stopped to smoke means he paused in order to smoke. I remember posting the letter is a memory; Remember to post the letter is a task (Fig 5.3). Would rather is followed by a bare verb: I would rather stay.
5.4.1 Worked checks
Q. Fill in the blank: "The woman ____ I met is my teacher." (who / whom / whose)
Answer. The woman is the object of met, so the answer is whom. I is the subject of the clause (Fig 5.1).
Q. Complete: "If he had studied, he ____ passed."
Answer. This is the third conditional (unreal past), so the main part is would have passed (Fig 5.2).
Q. Choose the correct form: "She suggested ____ early." (to leave / leaving)
Answer. Suggest takes the gerund, so the answer is leaving: "She suggested leaving early" (Fig 5.3).
Q. Correct the sentence: "If it will rain tomorrow, we will stay home."
Answer. The if-part takes the present tense: "If it rains tomorrow, we will stay home" (Fig 5.2).
Formula and fact sheet
| Pattern | Rule |
|---|---|
| First conditional | if + present, will |
| Second conditional | if + past (were), would |
| Third conditional | if + had V3, would have V3 |
| make / let | + bare infinitive |
| enjoy, avoid, suggest | + -ing |
| decide, promise, refuse | + to |
Chapter summary
- Who for people, which for things, whose for owners.
- Never use will or would in the if-clause.
- Unless already has a negative; do not add not.
- Make and let take a bare verb; get takes to.
- Learn the -ing verbs and the to verbs as two lists.
Practice questions
Set A — Recall (20 questions)
- The man ___ lives next door is a doctor.awhombwhosecwhichdwho
- The book ___ I bought yesterday is interesting.awhichbwhocwhosedwhom
- She is the girl ___ father is a pilot.awhobwhomcwhosedwhich
- If it rains, we ___ at home.awould staybwill staycstayeddstays
- If I ___ a bird, I would fly.aambwascbedwere
- If he had studied, he ___ passed.awill havebwouldcwould havedhad
- Unless you hurry, you ___ miss the bus.awillbwon'tcdiddhadn't
- I had my hair ___ yesterday.acuttingbcutcto cutdcuts
- She made me ___.ato laughblaughingclaughdlaughed
- He enjoys ___ football.ato playbplaycplayeddplaying
- She decided ___ a new job.ato findbfindingcfinddfound
- Water boils if you ___ it to 100°C.aheatedbheatcwill heatdwould heat
- I look forward to ___ you.aseebsawcseeingdto see
- The teacher let the students ___ early.aleavebto leavecleavingdleft
- He avoided ___ the question.ato answerbanswercanswereddanswering
- I will get the mechanic ___ the car.arepairbto repaircrepairingdrepaired
- That is the house ___ I was born.awherebwhichcwhodwhose
- She suggested ___ to the park.ato gobgocgoingdwent
- I would rather ___ tea than coffee.ato havebhavingchaddhave
- She stopped ___ last year, and her health improved.ato smokebsmokingcsmokedsmoked
Answers and explanations — Set A
1. (d) — "who" is the subject for a person.
2. (a) — "which" for a thing.
3. (c) — "whose" shows possession.
4. (b) — first conditional: if + present, will.
5. (d) — "were" in the unreal present.
6. (c) — third conditional: would have + V3.
7. (a) — "unless" = if not, so the main clause stays positive.
8. (b) — have + object + past participle.
9. (c) — make + bare verb.
10. (d) — enjoy + -ing.
11. (a) — decide + to-infinitive.
12. (b) — zero conditional: present in both clauses.
13. (c) — look forward to + -ing.
14. (a) — let + bare verb.
15. (d) — avoid + -ing.
16. (b) — get + object + to-verb.
17. (a) — "where" refers to a place.
18. (c) — suggest + -ing.
19. (d) — would rather + bare verb.
20. (b) — "stopped smoking" means quit.
Set B — Understanding (12 questions)
- If she ___ harder, she would pass.astudiesbwill studycstudieddhad studied
- If I had known, I ___ you.awould have toldbwould tellcwill telldhad told
- Rama, ___ brother is a doctor, lives here.awhobwhomcwhichdwhose
- The woman ___ I met yesterday is my teacher.awhosebwhomcwhichdwhat
- He had his car ___.arepairbrepairingcrepaireddto repair
- I can't help ___ when I see a joke.alaughingbto laughclaughdlaughed
- It is no use ___ over spilt milk.acrybto cryccrieddcrying
- I am used to ___ up early.agetbgettingcgotdto get
- Which sentence is correct?aIf it rains, I will stay home.bIf it will rain, I will stay home.cIf it rained, I will stay.dIf it rains, I would stay.
- He promised ___ me.ahelpingbhelpcto helpdhelped
- "Had I known" meansaIf I knewbUnless I knewcIf I knowdIf I had known
- Unless you study, you ___ pass.awillbwon'tcwoulddwouldn't
Answers and explanations — Set B
1. (c) — second conditional: if + past.
2. (a) — third conditional main clause.
3. (d) — "whose" before a noun.
4. (b) — "whom" is the object of "met".
5. (c) — have something done.
6. (a) — can't help + -ing.
7. (d) — it's no use + -ing.
8. (b) — used to + -ing means accustomed.
9. (a) — no "will" in the if-clause.
10. (c) — promise + to.
11. (d) — inversion replaces "if".
12. (b) — "unless you study" = if you do not study, so you won't pass.
Set C — Application (8 questions)
- The school ___ I studied is near my house.awhobwhomcwhosedwhere
- If he ___ earlier, he would have caught the train.ahad leftbleftchas leftdwould leave
- She had the tailor ___ a dress.ato makebmakingcmakedmade
- I forgot ___ the letter yesterday, so it is still on my desk.apostingbto postcpostdposted
- He remembers ___ the lock; he is sure he did it.ato lockblockclockeddlocking
- The man ___ car was stolen called the police.awhosebwhocwhomdwhich
- If water is heated to 100°C, it ___.aboiledbwill boilcboilsdwould boil
- I wish I ___ a car.ahavebhadcwill havedhaving
Answers and explanations — Set C
1. (d) — a place: where.
2. (a) — third conditional: if + past perfect.
3. (c) — have + person + bare verb.
4. (b) — "forgot to post": the task was not done.
5. (d) — "remembers locking": a past action recalled.
6. (a) — possession of the car: whose.
7. (c) — zero conditional: present, present.
8. (b) — unreal present: wish + past.