happen句型归纳
(1)happen to do sth.(主语常为“人”)，意为“碰巧。恰好”。to 后可用不定式的一般式to do,完成式to have done进行式to be doing如：
You happened to be out when I came to your house.
我到你家时，你正好出去了。
She happened to have just finished reading the book.
碰巧她刚刚读完那本书。
The two salesmen happened to be quarrelling when the manager entered.
经理进去时两个售货员碰巧在吵架。
(2)It(so)happen that…“(如此)碰巧，恰好”。如：
It happens that he is a teacher of English.
恰好他是位英语老师。
It so happened that he was going that way too.
如此碰巧的是他也往那边走。
注意：句型1)和2)可互换，如：
I happened to have no money with me./It happened that I had no money with me.
我碰巧身上没带钱。
(3)happen to sb./sth. “某人/物出事，发生了……情况”。
如：What has happened to your hand?你的手怎么了?
Be careful not to let anything happen to that child.
[应用]选择正确答案
①—We haven’t heard from Jane for a long time.(MET’91)
—What do you suppose __________to her?
A.was happening B.to happen
C.has happened D.having happened
②They happened to _______for Tianjin when we got there.(MET’)
A.leave B.have left C.leaving D.had left
③If anything __________you,let me know.
A.is happened to B.is happening
C.happens on D.happens to
Key:①C ②B ③D
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