查人人中国名人网kmeans算法应用实例:while后面一定要接doing吗？
来源：百度文库 编辑：查人人中国名人网 时间：2024/04/27 19:58:40
不是的，
while可以表示时间段例：
My Dad fell asleep while he was watching TV.我爸爸在看电视时睡着了。
while 做连词时可表示转折。
Some people are rich while others are poor.有的人富，而有的人穷。
注意：★while做连词时，要注意前后并列，
表时间解时要用进行时或加表时间的词组
如：I was watching TV while he was washing the clothes.
He had already come back while it was not dark yet.
表示比较时(即与whereas同意）直接加从句即可:
如：Russia is the biggest nation by area while Vatican is the smallest state.
不一定.也可以跟从句.
He was talking on the phone while we were watching TV.
He was singing while taking a shower.
不一定.while还表示在...期间
应该说是的