DẠNG THỨC ĐỘNG TỪ THEO SAU LÀ TO INFINITIVE
Cách dùng To-infinitive:
1. Verb + to V
Những động từ sau được theo sau trực tiếp bởi to-infinitive: agree, appear, arrange, attempt, ask, decide, determine, fail, endeavour, happen, hope, learn, manage, offer, plan, prepare, promise, prove, refuse, seem, tend, threaten, try, volunteer, expect, want,...
Ex:
- She agreed to pay $50.
- Two men failed to return from the expedition.
- The remnants refused to leave.
- She volunteered to help the disabled.
- He learnt to look after himself.
2. Verb + how/ what/ when/ where/ which/ why + to V
Những động từ sử dụng công thức này là:
ask, decide, discover, find out, forget, know, learn, remember, see, show, think, understand, want to know, wonder...
Ex:
- He discovered how to open the safe.
- I found out where to buy fruit cheaply.
- She couldn't think what to say.
- I showed her which button to press.
3. Verb + Object + to V
Những động từ theo công thức này là:
advise, allow, enable, encourage, forbid, force, hear, instruct, invite, order, permit, persuade, request, remind, train, urge, want, tempt...
Ex:
- These glasses will enable you to see in the dark.
- She encouraged me to try again.
- They forbade her to leave the house.
- They persuaded us to go with them.
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