Ø 狀語從句

　　狀語從句按其意義可以分為時間、地點、原因、目的、結果、條件、方式、讓步等類別。其引導詞分別如下：

　　時間狀語從句：when, after, before, as, while, whenever, since, once, until, as soon as

　　地點狀語從句：where, wherever

　　原因狀語從句：because, as, since, now that

　　目的狀語從句：so that, in order that, lest

　　結果狀語從句：so that, so…that, such…that

　　條件狀語從句：if, unless, suppose (supposing), provided (that), providing (that), on condition (that), in case, as (so) long as

　　方式狀語從句：as, as if (though)

　　讓步狀語從句：though, although, even if (though), however, whatever, no matter how (what, where, when), whether…or

　　將下面每組中的兩個句子合并，將其中一個改為狀語從句。

　　(as long as, on condition that, lest, so…that, such…that, in case, as if, now that, whether…or, however, )

　　1) You’ve bought a new car.

　　What are you going to do with the old one?

　　2) We’d better take the telescope with us.

　　Perhaps it is needed.

　　3) We must hurry off.

　　Otherwise, we might miss the bus.

　　4) The problem was very complicated.

　　It took us nearly two weeks to solve it.

　　5) The aircraft was flying at a very high altitude.

　　We could hardly see it.

　　6) I’ll lend you my computer.

　　The condition is that you keep it in good shape.

　　7) You can go out.

　　But you should promise to be back before 11 at night.

　　8) I remember the whole thing.

　　It seems that it happened yesterday.

　　9) He tried very hard.

　　But he could not do the job satisfactorily.

　　10) It may take an hour or even a whole day.

　　But I shall find out the answer.

　　(三) 復雜的簡單句

　　并列句和復合句往往可以濃縮成復雜的簡單句，使語言更為緊湊、多樣。

　　1. 表示時間、讓步或條件的狀語從句往往可以改寫為介詞詞組作狀語。

　　1) They looked both ways before they crossed the street.

　　2) I made my decision after I talked to Sir Francis.

　　3) Although he was ill, he was determined to carry out his plan.

　　4) Although they’re intelligent, they aren’t doing well in school.

　　5) Although he’s rich, he isn’t very happy.

　　6) Although he’s tall, he isn’t a very good basketball player.

　　7) If we had your support, we might succeed in performing our task.

　　8) Even if there were air and water, plants still couldn’t grow on the moon.

　　9) If you don’t work hard, you will accomplish nothing.

　　10) If it had not been for their assistance, he would have found himself in trouble.

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