状语从句位于主句之后,从属连词前面不加逗号吗
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主句在前的,一般不加。从句在前反而要加逗号。
1、名从里的从属连词that (无词义,不做成分)
if,whether (表达是否的意义,但不做句子成分)
2、状从里的从属连词,before,after,since,if,because,though等。用法编辑在英语词类中,连接词可说是最容易掌握的一种。
从属连词连接两个或两个以上的分句,形成复杂句中的从属分句。
例如:(4) He said that he did not want to go .
(5) Many things have happened since I last saw him.
(6) You may come if you want to.
从属连词用来连接各种从句。until(till)直到,在用until表达时间状语的句子中,主句中的动词是要十分小心去选择的。
如动词是持续性动词,它要用肯定句,
如:I studied hard until 12 o'clock last night.
如果动词是瞬间截止性动词,则要用否定句,
如:He didn't go to bed until his mother came back.
由since,for,by,before, 来引导的时间状语从句。
since 引导的时间状语是动作的开始时间,如:I have studied English since 1990.
而by引导的时间状语通常是动作的结束时间,如:I had learned 25 English songs by the end of last term.
1、名从里的从属连词that (无词义,不做成分)
if,whether (表达是否的意义,但不做句子成分)
2、状从里的从属连词,before,after,since,if,because,though等。用法编辑在英语词类中,连接词可说是最容易掌握的一种。
从属连词连接两个或两个以上的分句,形成复杂句中的从属分句。
例如:(4) He said that he did not want to go .
(5) Many things have happened since I last saw him.
(6) You may come if you want to.
从属连词用来连接各种从句。until(till)直到,在用until表达时间状语的句子中,主句中的动词是要十分小心去选择的。
如动词是持续性动词,它要用肯定句,
如:I studied hard until 12 o'clock last night.
如果动词是瞬间截止性动词,则要用否定句,
如:He didn't go to bed until his mother came back.
由since,for,by,before, 来引导的时间状语从句。
since 引导的时间状语是动作的开始时间,如:I have studied English since 1990.
而by引导的时间状语通常是动作的结束时间,如:I had learned 25 English songs by the end of last term.
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