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2013高考英语备考:happen句型用法说明

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 ha...

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