Question

时间状语从句与条件状语从句的区别

Answer 1

时间状语从句:

连接时间状语从句的连接词有:

(1) 连词：when, while, as. 它们都表示当…时候的意思。如果主句和从句的动作同时发生且都是进行时
态，只用while, as. 其他情况下when, while, as通用。

1 When he came in, I was listening to the radio．

2 As I was wandering in the street, I met her.

3 While (as) I was watching TV, my mum was cooking in the kitchen.

(2) 连词before, after, since, until(till). 当他们表示时间时，他们既是介词又是连词。

{ He usually drinks a cup of tea before he goes to school.
连词
He usually drinks a cup of tea before going to school.
介词
{
He usually drinks a cup of coffee after he comes back from school.
连词
He usually drinks a cup of coffee after coming back from school.
介词
{

I have lived in Dalian since my son was born in 1999.
连词
通常情况下，主句用现在完成时，从句用一般过去时。
I have lived in Dalian since 1999.
介词

{
I will wait here until(till) you finish your job.
连词
I will wait here until(till) 8pm.
介词

(3) 词组：as soon as

{ I will tell him as soon as he comes back.
As soon as she finishes her homework, she will play tennis.
通常情况下，主句用一般将来时，as soon as 引导的从句用一般现在时。

有if, unless, as long as连接的状语从句
连接条件状语从句的连接词有：if, unless, as long as.

1 If I am not busy tomorrow, I will play football with you.

2 You won’t pass the exam unless you work hard on it.

3 As long as you take my advice, you will outwit your rival

Answer 2

if.when
都能引导条件状语句if比较普遍所能题目混淆我办哈哈按照书啦