现在分词宾语补足语

1. make & let 这两个动词后面都跟不带to的不定式，但意义和用法有区别
(1)make + 名词/代词 + 不带to的不定式表示“迫使”、“致使”：
That beard makes you look much older than you really are
What made him change his mind
（2）在被动语态中含有上述意义的make后面必须带to:
He was made to work fourteen hours a day. 他被迫一天工作14小时
He was made to change his mind. 他被迫改变了主意
2.let 有两种用法，
（1）一种时用于祈使句，建议包括说话者在内的人采取某一行动：
Let's not waste any more time.
否定形式也可用
Don't let's waste any more time.
（2） let的第2种用法是表示“允许”，其结构与make 相同，即let + 名词/代词 + 不带to的不定式。如果宾语 是 us, 则不能缩写成let's
Please let us have more time, will you ?
I won't let you ride my bicycle.
（3） let 后面可以跟一个被动的、不带to的不定式
He let it be known that the house was his.
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