We can also say:

a. Adam went to the man to buy cannabis.

b. Adam went to the man in order to buy cannabis.

Summary : (1)in order to／in order not to可放于句首或句中。

(2)so as to／so as not to只可放于句中。

Step 3 Practices

a. Make sentences by using to, in order to and so as to．

　　(1)go there，help Tom out of trouble

(2)do exercise，every day，keep healthy

　　(3)do everything they can，save the drug addict

Suggested answers:

　　(1)They go there to help Tom out of trouble．

They go there in order to help Tom out of trouble．

They go there so as to help Tom out of trouble．

(2)We do exercise every day to keep healthy． '

We do exercise every day in order to keep healthy．

We do exercise every day so as to keep healthy．

(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．