逗号的用法:While I was having dinner,my brother was packing.While I was having dinner,my brother was packing.是否可以：While I was having dinner my brother was packing.如 toddzhang123 老师的提议，这句话可以不使用逗号，而

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逗号的用法:While I was having dinner,my brother was packing.While I was having dinner,my brother was packing.是否可以：While I was having dinner my brother was packing.如 toddzhang123 老师的提议，这句话可以不使用逗号，而
逗号的用法:While I was having dinner,my brother was packing.
While I was having dinner,my brother was packing.
是否可以：
While I was having dinner my brother was packing.
如 toddzhang123 老师的提议，这句话可以不使用逗号，而改为：
My brother was packing while I was having dinner.

逗号的用法:While I was having dinner,my brother was packing.While I was having dinner,my brother was packing.是否可以：While I was having dinner my brother was packing.如 toddzhang123 老师的提议，这句话可以不使用逗号，而
可以,因为意思上并没有改变,但是逗号的加入使得句子的层次变得更为清晰.
楼上说“逗号在英语里是没有价值的”,这我并不能苟同,在很多情况下,逗号尤其特殊的功能：比如,非限制性定语从句中,which的前面必须加逗号以表明后面的整个句子是对前面的补充说明,比如：I invited John to my party, which is goning to start at 7:00 PM；而在很多插入语中,也必须采用逗号,比如：
I invited John,who is available that time by the way, to my party, which is going to start at 7:00 PM.

不可以，这是两个分句

时间状语从句：

一般从句置于主句前时常加逗号隔开。


希望对你有帮助，没有清楚采纳

逗号在英语里是没有价值的

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