Unit 25 The infinitive I | Grammar | A2
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Unit 25 The infinitive I | Grammar | A2

Nhìn chung, động từ nguyên mẫu có to được sử dụng:

- khi nó theo sau tính từ như happy, amazed, sorry và một số tính từ đề cập đến cảm xúc của người nói hoặc tình trạng tâm lý.
VD. I’m sorry to hear you’re not well. 
       I am very happy to be here to present this award.
       She was amazed to read about their forthcoming divorce.
- khi nó theo sau tính từ như difficult, safe, dangerous.
VD. That story is difficult to believe. 
        Is it safe to swim here? 
       The sign says it’s dangerous to play near the railway lines 
- khi nó theo sau cấu trúc câu bị động với các động từ như hope, say, expect.
VD. She is said to be sure to win the race 
       The newspapers are expected to arrive by midday.


Add an appropriate verb (to + infinitive) to complete the following sentences:

1. On arrival at the hotel, we were disappointed ____________ an empty swimming pool.

2. I'm sorry ____________ you all the tickets for tonight's show have been sold.

3. She is anxious ____________ a letter from her son.

4. We were surprised ____________ the newsreader was totally deaf.

Now fill the gaps in the sentences below with the appropriate adjective from the box:

amazed     sad     disappointed     upset

5. Timmy was ____________ to find that his pet spider had escaped.

6. I was            ____________ to see that all the tickets for tonight's show had been sold.

7. Peter was ____________ to read in the paper that his old school friend had died.

8. My parents were ____________ to hear that I had scored top marks in the maths test.


Transform the sentences in the exercise below so that the same meaning is ex-pressed using an infinitive:

e.g. Driving a lorry is not easy. - It is not easy to drive a lorry.

She has already decided. It is unlikely she will change her mind.

She is unlikely to change her mind.

1. Smoking a packet of cigarettes a day is dangerous for your health.

It is __________________________________________________.

2. Diving is perfectly safe if you have been properly trained.

It is __________________________________________________.

3. You can’t fly. It’s impossible

It’s __________________________________________________.

4. Being patient with young children is sometimes hard.

It is sometimes __________________________________________________.

5. You shouldn’t steal. It’s wrong.

It’s __________________________________________________.

6. Going to Spain was my idea.

It was __________________________________________________.


The main verb in each of the following sentences is in the passive voice. Choose the most appropriate verb from the box to fill the gaps:

to be     to holiday     to spend     to produce     to buy     to return

1. The strike came to an end and the workers were forced _________ to work.

2. Children should be taught _________ independent from an early age.

3. Chemicals from factory chimneys are thought _________ acid rain.

4. The Royal family is expected _________ in Scotland this summer.

5. These women are known _________ a lot of money on clothes,

6. All pupils are reminded _________ their school uniforms before term starts.