when中的副词含义(从属连词when的常见含义)
Episode18: 从属连词when的常见含义
安徽省蚌埠二中----朱正军
作为连词,when有两种功能,一是用作并列连词(已在Episode 1中进行了讲解),二是充当从属连词。本集就来讲一讲作为从属连词的when的几种常见用法。
I. 引导时间状语从句
1. About 3,700 people were on the Diamond Princess when it arrived at the port on February 3.
2. When I was ten years old, I got along well with my brother.
从上面两个例句中,我们可以看出when的意思是“当……时候”,既可以表示一点时间(at the time)也可表示一段时间(during the time)。同时我们也要关注when的省略句,如:
3. When (I was) walking along the street, I met a friend of mine.
4. When (she was) asked about her age, Jane said it was a secret.
5. When (I was) in university, I went to the library twice a week.
II. 引导定语从句
6. I’ll never forget the days when we stayed together.
7. 4 o’clock was the hour when I used to get up in the morning.
引导定语从句时,when在从句中作时间状语,即可表示一段时间(in/during the days),也可表示一点时间(at 4 o’clock)。
III. 引导名词性从句
8. When we will set out tomorrow is not decided yet. (主语从句)
9. I knew when he came back home last night. (宾语从句)
10. The problem is when we can collect so much money. (表语从句)
11. I have no idea when he was studying in this university. (同位语从句)
when引导名词性从句时既可以指一段时间,也可指一点时间;同时when既可以指确定的时间,相当于状语从句和定语从句中的when,也可指不确定的时间,相当于特殊疑问词when的含义。另外,注意when to do sth.的用法,如:
12. You’ll be informed when to leave for New York tomorrow.
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