b. He finished his work so well that the boss praised him in public.

8.让步状语从句: 由though / although, even if, whatever, whoever, whenever, no matter what / who等引导

a. He is in very good health though he is old.

b. They didnt stop working even if it began to rain hard.

三.应注意的问题:

1.时间和条件状语从句中常用一般时代替将来时

a. I will go and see a film if I have time tomorrow.

b. I will tell the about it as soon as he comes back.

c. He said he would go out for a walk when he finished his work.

2.状语从句中可有省略: 在一个含有状语从句的复合句中, 如果主句和状语从句的主语相同, 或状语从句的主语是it, 并且状语从句的谓语含有be动词时, 可以将状语从句的主语和be一起省略掉

a. As (she was ) a child, she began to learn English.

b. If ( he was ) alive, he must be at least ninety years old.

c. Although ( he was ) told to stop, he kept on working.

d. If ( it is) necessary, ring me up.

e. He didnt say a single word until ( he was ) asked.

3.as和than引导的比较状语从句中, 从句中和主句中相同的部分往往省略, 从句中只剩下比较对象

a. He is a head taller than I ( am tall ).

than之后的人称代词是主格或宾格时, 有时意思不同, 如:

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