Dạng động từ và cấu trúc · CEFR B1

Infinitives of Purpose

1Công thức

to / in order to / so as to + base verb; in order not to / so as not to + base verb; so (that) + clause

2Giải thích

Dùng để nêu mục đích của hành động: to + V, in order to + V, so as to + V; mục đích phủ định dùng in order not to / so as not to. So (that) + mệnh đề (can/could/will/would) cũng diễn tả mục đích.

Used to explain why someone does something. The full infinitive alone, in order to and so as to are all common, and so (that) can introduce a clause with a modal.

Dấu hiệu: in order toso as toso that

3Khi nào dùng

Giving the reason for an action
Expressing negative purpose (in order not to / so as not to)

4Quy tắc cần nhớ

For negative purpose use in order not to or so as not to, not to alone
So (that) is followed by a clause with can/could/will/would

5Ví dụ

He saved money to buy a bicycle.
We left early in order not to miss the train.
I wrote it down so that I wouldn't forget.

6Lỗi thường gặp

I went to the shop for buying milk. (to buy milk)
She spoke quietly for not to wake the baby. (so as not to wake the baby)