done 是过去分词,表示过去,且完成.如boiled water 是开水的意思.可做定语,如开水,或者是task finished yesterday should be handed in.其中finished 是后置定语修饰task .
to do 是不定式,包括很多形式.to do .to be done ,to be doing ,to have done ,to have been done ,to have been doing.可以根据题目意思选择.如.
The teacher asked students to obey the traffic rules .
He wants to be loved .
The president was reported to be thinking of some important events .
He pretended to have worked in a big corporation.
手机打字太麻烦.
to do 表示将来.如the plan to be discussed is good.在做后置定语时与done 不同.
至于主动表被动,需要记住几个关键的词,如need ,require,sell ,等.