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 关于while的用法whiel+过去进行时,后面的句子是过去时或者是过去进行时吗?比如while i was cooking,my mom get out或者while i was cooking,my mom was watching TV还有就是逗号前后的句子位置能交换吗? 英语逗号的用法 逗号,顿号、的用法 逗号的用法 while引导的两个句子可以用逗号链接吗例如while Iwas playing the pano,he was singing. while as when just as all morning的用法i was saying that you want to do这句话对不对 While的一些用法.While I () with my fiend,she came in.A:am taling B:was talking C:talked D:am going to talking c++ while()中逗号表示什么例如while(cin>>xxx,xxx.eof() ) 这中间的逗号表示什么最好补充一下while（）里的判断条件还有什么奇葩用法,我的书上没讲啊.菜鸟求教 关于while的用法 Toby was watching TV while Tim____(do)his homework at 7 PM 英语中逗号的用法? 分号和逗号的用法? 句号与逗号的用法 顿号与逗号的用法 顿号和逗号的用法 While的用法 和while的用法! while的用法?