連系動(dòng)詞後接不定式的用法

連系動(dòng)詞 be 後根據(jù)情況可自由地接不定式作表語： My dream is to be a scientist. 我的夢(mèng)想是儅一名科學(xué)家。 All you have to do is to listen. 你衹需要聽。

seem, appear, prove, turn out, grow 等連系動(dòng)詞後也可接不定式(尤其是 to be)短語作表語： The man seemed to be ill. 這個(gè)人好像病了。 The plan proved to be useful. 這個(gè)計(jì)劃証明是有用的。 He appears to know this. 他好像知道這一點(diǎn)。 The weather turned out to be fine. 天氣結(jié)果很好。 He has grown to like studying English. 他漸漸喜歡學(xué)英語了。 若所接不定式爲(wèi)to be，通?？梢允÷?。

sound, smell, feel, taste, become 等連系動(dòng)詞後通常不能接不定式： 誤：These oranges taste to be good. (應(yīng)去掉 to be) 誤：The roses smell to be nice. (應(yīng)去掉 to be) 連系動(dòng)詞look後有時(shí)也可接to be，但以省略to be 爲(wèi)普通。