答：非谓语动词作宾语(主要看动词) to do作宾语。
考点一:to do作宾语记忆口诀三个希望两答应(hope,wish,want,agree,promise)两个要求莫拒绝(demand,ask,refuse)设法学会做决定(manage,learn,decide)不要假装在选择(pretend,choose)
考点二:不定式to do中省略do(do是具体的V实义)为了避免重复,可以省略不定式中的do,只保留不定式符号to。
1. 作主语
不定式作主语时，谓语用单数。往往用it 作形式主语，把不定式放在谓语后面。
例句：
It took us two hours to finish the job.
It is impossible for us to get there on time.
It is very kind of you to help us.
下列动词通常用不定式作宾语：want, try, hope, wish, need, forget, know, promise, refuse, help, decide, begin, start, learn, agree, choose, get等
1）用连词“and，but”等连接两个简单句构成并列句
（2）用关系词who/which/that等构成从句（主从复合句）
（3）将其中一个谓语动词变成非谓语形式
2、分类不定式:to do动名词: doing分词: doing(现分) /done(过分)
3、判断非谓语动词首词是to, doing或单独的done必是非谓语动词
