I kissed them both.对 I kissed them all.对 I kissed both.对 I kissed all.错 I kissed the girls both.错 I kissed the girls all.错 理解对吗?
你的理解有对有错。正确的理解是:
I kissed them both.对
I kissed them all.对
I kissed both.对
I kissed all.对(但不算普通)
I kissed the girls both.错(both用于句末时前面只能是代词,不能是名词)
I kissed the girls all.错(all用于句末时前面只能是代词,不能是名词)