动词不定式的句子成分.ppt

1、动词不定式 的句子成分,一、动词不定式作主语： eg. To play football is very interesting. 常用It作形式主语，后面的不定式短语是真正主语。 Its very interesting to play football. （1）It takes sb. some time to do sth. 如：It took me two hours to do my homework yesterday. （2）Its important for us to learn English well. （3）Its kind of you to help me.,二、动

2、词不定式作宾语： decide to do sth. ; try to do sth. ; want to do sth. ; plan to do sth. promise to do sth. ; forget to do sth.等 (1) I plan to stay there for three days. (2) I decide not to play computer games any more. 三、动词不定式作宾语补足语（宾补）： ask sb. to do sth.; tell sb. to do sth. ; want sb. to do sth. allow sb

3、. to do sth.等 如 （1）It allows people to get closer to them. （2）Mother often tells me to study hard.,宾语,宾语,宾补,宾补,总结：1.当不定式直接跟在动词之后，是作宾语； 2.当不定式之前有sb./sth.时，是作宾补。,四、动词不定式作后置定语： 如 (1) Can you give me something to eat? （作后置定语） (2) I have a lot of homework to do. (3) Many wild animals dont have a safe pla

4、ce to live. 五、动词不定式作状语： 如 (1) I usually go home to have lunch. (作状语，表目的) (2) Im sorry to hear your mother is ill. (作状语，表原因) (3) Im excited to see pandas. (作状语，表原因),15. My job is _ (teach) you English. Bettys dream is _ (be) a scientist. My wish is _ (go) to university. Our plan is_ (see) the play in

5、 the teahouse. Our goal(目标) is _ (win) the final match 总结：上述5个句子都是_ 用在系动词be（是）之后做_。,to teach,to be,to go,to see,to win,表语,动词不定式,中考热点,1. The ice in the lake is as _ as it was before. A. thin B. thinner C. thinnest D. the thinnest 2. - How can I speak English_ you? - Youd better speak more. I think. Aa