吉林mba輔導(dǎo)書

MBA英語語法輔導(dǎo)：動詞不定式

　　could learn…

　　經(jīng)常在這種結(jié)構(gòu)中使用的動詞有：consider,decide,discover,explain,find out,forget,hear,know,lea rn,observe,understand,wonder等。

　　編輯本段語法功能一、作主語

　　動詞不定式作主語時(shí)，句子的謂語動詞常用單數(shù)，其位置有以下兩種：

　　(1)把不定式置于句首。如：

　　To get there by bike will take us half an hour.

　　(2)用it作形式主語，把真正的主語不定式置于句后，常用于下列句式中。如：

　　①It be 名詞 to do

　　It's our duty to take good care of the old.

　?、贗t takes sb some time to do

　　How long did it take you to finish the work?

　?、跧t be 形容詞 for sb to do

　　It is difficult for us to finish writing the composition in a quarter of an h

　　It is stupid of you to write down everything (that) the teacher says.

　　④It seems(appears) 形容詞 to do

　　It seemed impossible to save money.