在周末我可以做任何我想做的事 I can ( whatever) (i ) ( want)on the weekend
我将一直等到你来信 I‘ll wait ( until) (i) (hear ) (from )you 同义 句转换You can get in touch with him by telepho ne You can ( call) ( him)by telephone
I don't know what I can buy for Peter 's birthday I don't know ( what) (to ) (buy )for Peter' birthda y