高考英语必备句子+句型|2017高考英语必备句型：before句型

(1) before sb can/ could … 某人还没来得及……

　　例：Before I could get in a word ，he had measured me.

　　我还没来得及插话，他就给我量好了尺寸

　　(2) It will be +时间+ before + 还有多长时间……

　　例：It will be 4 years before he graduates. 他还有四年时间变毕业了。

　　(3) had done some time before (才……)

　　例：We had sailed four days and four nights before we saw land.

　　我们航行了四天四夜才见到陆地。

　　(4) had not done --- before --- 不到……就……

　　例：We hadn’t run a mile before he felt tired.

　　我们还没走到一英里路就觉得累了。

　　(5) It was not +一段时间+ before 不多久就……

　　例：It wasn’t two years before he left the country.

　　还没到两年他们离开了那国家。

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