unit 1 cb 11

Unit 1: FRIENDSHIP
Ngữ pháp của bài 1: THE INFINITIVE
I. Infinitive with "to"
Ta dùng động từ nguyên mẫu có "to" trong các trường hợp sau:
1. Sau các tính từ:
Ex: It's nice to see you again.
I am too pour to buy a house
He is not old enough to see that film.
2. Sau các indefinite pronoun:
Ex: I have nothing to do now.
I can't find a place to live.
3. Sau các động từ:
- afford
- agree
- appear
- arrange
- ask
- choose
- decide
- fail
- happen
- help
- hope
- learn
- manage
- offer
- plan
- pretend
- promise
- refused
- tend

- threaten
- want
- wish
* Note:
- would like/love/ prefer + to - infinitive
- like/love/hate/dislike + to - infinitive
- like/love/hate/dislike + V - ing (hobbies, interesting).
4. Verb + O + to - infi:
- advise
- allow
- ask
- beg
- cause
- enable
- encourage
- expect
- invite
- order
- persuade
- remind
- tell
- want
- warn.
5. To - infi diến tả một mục đích. (= in order to = so as to)
6. To - infi as a Subject:
Ex: Tolove and to be loved is the happiest in the world.
7. To - infi as a complement:
Ex: My dream is to become a docter.
II. Infinitive without "to":
Ta dùng động từ nguyên mẫu không "to" trong các trường hợp sau đây:

1. Sau các modal Verb:
- Can, could, may, might, should
- Need, dare
2. Sau had better, would rather:
3. Make, let s.o + bare
4. Verbs of perception:
- Hear/see/watch/notice/feel + O + bare: diễn tả hành động đã kết thúc hoặc toàn bộ hành động.
- Hear/see/watch/notice/feel + O + V-ing: diễn tả hành động đang diễn ra hoặc 1 phần của hành động
Ex: I saw him climb throung the window yesterday.
I see smoke flying from the chimney.
5. Have to do something.
6. Trong các cấu trúc nhấn mạnh:
Ex: I do believe you.
Unit 1: FRIENDSHIP
Exercise 1: Complete these sentences. Choose an appropriate verb. Sometimes more than one verb is
possible.
hope, allow, want, do, promise, threaten, enter, appeal, need, become
1. We him to go to the party.
2. They the kittens to go to the good homes.
3. Did you the bed to be delivered or shall I collect it?
4. The police for his protectors to give him up.
5. She to visit the exhibition before it ended.
6. I to drive a car before the age of 18.
7. It was impossible his room. The door was locked.
8. His ambition is the richest man in the world.
9. He to stay away.
10. She promised never it again.
Exercise 2: There is at least one mistake in each sentence. Suggest appropriate correction.
1. The let me to borrow their car while thay were on holiday.
2. This card entitles to take an extra person with you free.

3. Hospital workers had to make them to do with a 1.5% pay increase this year.
4. Sam promised me to show me how to fish for salmon, but he never had the time.
5. For years the group has been campaining an inquiry to hold into the accident.
Exercise 3: Report these sentences using one of these verbs and a to-inf. Use each verb one only.
agree, encourage, invite, order, promise, refuse, volunteer, warn.
1. You cant borrow the car!
He
2. You really should continue the course.
He
3. I'll phone you soon.
He
4. Okie, I'll come with you.
He
5. Stop the car!.
He
6. Would you like to go out for dinner?
He
7. Don't go out without an umbrella.
He
8. I'll work late at the weeken.
He
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