when ,while ,as 后面引導時間狀語從句 , 我可不可以再在時間狀語從句后加個時間點. （不是時間段）
when i had a coffee at 4 o'clock ,he came in .
when i had a coffee ,he came in at 4 o'clock （要是我加在主句了,可不可以）
while he was going shopping yesterday, he kept me waiting for three hours .
since ,until ,after ,before . 引導的時間狀語從句, 可不可再在 他們后面加個時間點？
謝謝管理.
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您問when, while, as 后面引導時間狀語從句可不可以再在時間狀語從句后加個時間點（不是時間段），個人認為，從理論上說是可以的，但還是要視語義的需要而定。比如：
When I arrived there at about 4 o’clock, he was still working.
When I got ready to leave at about 4 o’clock, he was still sleeping.
將 at 4 o’clock 之類的時間點加在主句上也是可能的。如：
When he came in, I told him that I would leave at 4 o’clock.
When we were waiting there, we heard a big explosion at 4 o’clock. 回復時間:
2010/12/4 14:36:15 |
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主題：：
：2010/12/4 0:20:26
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