2021军队职称英语语法复习：非谓语动词解析(3)

常用句式有:
1、It+be+名词+to do.
2、It takes sb.+some time+to do.
3、It+be+形容词+of sb+to do.
4、It+be+形容词+for sb.+to do.
常用careless,,clever,good,foolish,honest,kind,lazy,nice,right,silly,stupid,wise,等表示赞扬或批评的形容词,不定式前的sb.可作其逻辑主语.
（2）作表语:
Her job is to clean the hall.
He appears to have caught a cold.
（3）作宾语:
常与不定式做宾语连用的动词有:want,hope,wish,offer,fail,plan,learn,pretend,refuse,manage,help,agree,promise,prefer,如果不定式（宾语）后面有宾语补足语,则用it作形式宾语,真正的宾语（不定式）后置,放在宾语补足语后面,例如:
Marx found it important to study the situation in Russia.
动词不定式也可充当介词宾语,如:I have no choice but to stay here.
He did nothing last Sunday but repair his bike.
动词不定式前有时可与疑问词连用,如:He gave us some advice on how to learn English.
（4）作宾语补足语:在复合宾语中,动词不定式可充当宾语补足语,如下动词常跟这种复合宾语:want,wish,ask,tell,order,beg,permit,help,advise,persuade,allow,prepare,cause,force,call on,wait for,invite.
此外,介词有时也与这种复合宾语连用,如:With a lot of work to do,he didn't go to the cinema.
有些动词如make,let,see,watch,hear,feel,have等与不带有to的不定式连用,但改为被动语态时,不定式要加to,如:I saw him cross the road./He was seen to cross the road.