(3)They do everything they can to save the drug addict．

They do everything they can in order to save the drug addict．

　　They do everything they can so as to save the drug addict．

a. Make sentences using in order not to, so as not to．

　　(1)go to school early，not be late

　　(2)review his lessons carefully，not fail the exam

　　(3)listen attentively，not miss any words

　　Suggested answers:

　　(1)We go to school early in order not to be late．

We go to school early so as not to be late．

(2)He reviewed his lessons carefully in order not to fail the exam．

He reviewed his lessons carefully so as not to fail the exam．

(3)We listen attentively in order not to miss any words．

　　　We listen attentively so as not to miss any words．

【合作探究】

a. Read the following sentences. Pay more attention to the words in bold.

1. The doctor told Adam that he could die if he didn't stop taking crack cocaine．So Adam