Mrs Smith used to have a big house in down town.

　　史密斯夫人在城里曾經(jīng)有一座大房子。

　　3. 在條件、時(shí)間狀語從句中代替一般過去將來時(shí)

　　They said they would let me know as soon as they got there.

　　他們說只要他們一到達(dá)那兒就會(huì)馬上讓我知道的。

　　He said he would not go if it rained.

　　他說如果下雨他就不去。

　　4. 用于虛擬語氣

　　If only I were a bird.

　　要是我是只鳥兒就好了。(表示不可能)

　　Did you wish to see me？

　　你是找我嗎？(表示委婉)

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