to do有时候主动表被动,怎么区分答:hard, difficult, easy, fit, necessary, dangerous, comfortable, heavy这种用在“sth/sb be+这些形容词+to do”这种情况的to do是被动,比如You are so heavy to lift up.举起你来真重(你被举起来)。to let, to blame, to rent, remain to do等常用主动结构表示被动含义。比如I am to b...
be + adj + to do主动表被动中有哪些形容词可以这样用?答:Sth is easy to do.或find sth easy to do结构:“某些形容词+不定式”的结构中, 不定式与句子主语有动宾关系时。(常用于此结构的形容词有:difficult, easy, hard, interesting, pleasant, nice, bitter, fit, dangerous, light, heavy, important等)The picture is pleasant to look at.The ...