连系动词后接不定式的用法连系动词 be 后根据情况可自由地接不定式作表语：My dream is to be a scientist. 我的梦想是当一名科学家。All you have to do is to listen. 你只需要听。seem, appear, prove, turn out, grow 等连系动词后也可接不定式(尤其是 to be)短语作表语：The man seemed to be ill. 这个人好像病了。The plan proved to be useful. 这个计划证明是有用的。He appears to know this. 他好像知道这一点。The weather turned out to be fine. 天气结果很好。He has grown to like studying English. 他渐渐喜欢学英语了。若所接不定式为to be，通常可以省略。sound, smell, feel, taste, become 等连系动词后通常不能接不定式：误：These oranges taste to be good. (应去掉 to be)误：The roses smell to be nice. (应去掉 to be)连系动词look后有时也可接to be，但以省略to be 为普通。
become用作连系动词，意为“成为”，其后可接：1. 名词They became great friends. 他们成了莫逆之交。He aims to become a computer expert. 他打算当一名电脑。She has become a painter of distinction. 她成了一名杰出的画家。2. 形容词She became very fond of her. 她变得非常喜欢她了。He soon became angry. 他过了一会儿就生气了。She has become familiar with the house. 她对这房子已变得很熟悉。I’ve become used to a vegetarian diet. 我已习惯于素食。3. 过去分词They had just become engaged. 他们刚刚订婚。At last the truth became known to us. 我们终于知道了真相。The room soon became crowded. 房间很快变得拥挤起来。Jamie was becoming annoyed with me. 杰米变得对我不高兴起来。其后一般不接不定式他开始对生物感兴趣了。误：He became to be interested in biology.正：He became interested in biology.于是我们开始喜欢他了。误：Then we became to like him.正：Then we began [came] to like him.</p 产品：澳博培训供货总量：不限产品价格：议定包装规格：不限物流说明：货运及物流交货说明：按订单
