1.Hỏi về mục đích


- why..............? tại sao.........?


Why do you want to learn English?


- what ...........for? để làm gì..........?


what did you buy it for?


- what is the purpose of......? Mục đích của.......là gì?


what is the purpose of her visit?


2. Diễn tả mục đích


a. For + Noun ( phrase) : để


He has gone out for dinner


I went to the supermarket for some foods

b. To do.....: để


He has gone out to eat dinner


Lưu ý : She has been to the post office for buying stamp ---------> câu này sai


She has been to the post office to buy stamp -----------> câu này đúng

Tuy nhiên có trường hợp ngoại lệ


To be used for doing / to do



A knife is used for cutting


A knife is used to cut ( cả hai câu đều đúng)

c. In order to do = so as to do


He finished work early .He wanted to see the football match.


------> H e finished work early in order to see the football match


+ In order not to do = so as not to do



We whisper .We didn't want to disturb him.


-------> So as not to disturrb him, we whisper


+ In order for sb/ sth to do : Để cho ai đó / cái gì làm gì


In order for the lift to work you must press this button
d. with a view to + V_ing : để làm gì , với ý định làm gì




With a view to preparing this report, I will visit a number of venues and attended quite a lot of games

e. So that / In order that + S__V ( can , could , may , might , will, would)



I left the letter on the table . I wanted him to see it when he came in


= I left the letter on the table so that he could see it when he came in


We were speaking quietly .We didn't want anyone to hear us


= We were speaking quietly in order that no one could hear it


f. For fear that S_V ( should): vì sợ rằng

I am telling you this for fear that you should make a mistake

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