Infinitive with to

We use the to-infinitive after:

• some verbs: agree, choose, decide, expect, learn, prepare, promise, seem, want, would love, would like.

E.g.: I would love to go to London.

Infinitive without to

We use the infinitive without to after:

• modal verbs: can, could, may, might, must, should, etc.

E.g.: I can’t go to the party.

• the auxiliary do

Exercise 23. Use the Gerund, the To-infinitive or the Bare Infinitive:

1. Let’s ___________ (meet) there at six o’clock.

2. I thought of ___________ (leave) before the party.

3. I’m hungry. I feel like ___________ (have) dinner.

4. She invited them ___________ (sit down) at the table.

5. I saw the lorry ___________ (crash) into a lamp post.

6. He denies ___________ (have) killed the dog.

7. They are unable ___________ (agree).

8. She offered ___________ (help) him.

9. Have you stopped ___________ (smoke)?

10. It was so funny that I couldn’t help ___________ (laugh).

11. The driver made us ___________ (push) the car.

12. Before ___________ (accept) , you should consider it carefully.

13. Take this opportunity of ___________ (say) what you really think.

14. She’s good at ___________ (make) speeches.

15. Some Portuguese rivers are said ___________ ( be) polluted.

16. I’m used to ___________ (hear) of his extravagant attitudes.

17. I can’t help __________ (feel) that there is something very wrong somewhere.

18. It’s hard ___________ (decide) which film is the best.

19. We are still waiting for them ___________ (reply).

20. - Are you glad you’re going to meet her?

- Oh, yes. I’m looking forward to ___________ (meet) her.

Exercise 24. Reword the following sentences beginning them as indicated below and make the necessary changes:

1. It is very dangerous to drive so fast.

You shouldn’t __________________________________________

2. I’d rather visit Spain than France.

I’d prefer __________________________________________

3. Don’t hurry. It’s no use.

It’s no use __________________________________________

4. I can keep the car clean.

It’s easy for me __________________________________________

5. You shouldn’t travel alone.

You’d better __________________________________________

6. I always feel embarrassed when he behaves like that.

I can’t help __________________________________________

7. I phoned Bob and then I went out.

After __________________________________________

8. Could you turn the radio down, please?

Would you mind __________________________________________

9. We wanted to find the place and we did it.

We succeeded in __________________________________________

10. We could do radical sports.

He suggested __________________________________________

Part IX. Project

Provide a short project describing your work in the chemical laboratory. You may do it as a “PowerPoint Presentation”, essay, etc.

Make the illustration of the rules “Laboratory Safety”.

Illustrate the laboratory equipment, describing its functions.