for an hour 和an hour有什么不同.

for an hour 和an hour有什么不同. for an hour 是sleep for an hour 还是 sleeping for an hour last和last for有啥区别比方说last an hour和last for an hour? i danced for an hour. half hour =half an hour half hour half an hour 的意思有和区别? an hour early 和 an hour earlier 的区别? in an hour和after an hour用法分别是什么 in an hour和within an hour的区别 an hour ago和an hour later有什么区别? they walked for.A,an hour B.half a hour C,half an hour 选哪个 for an hour 用英语怎么说 for an hour.用汉语怎么说 since 还是 for an hour ago you --- (be）late for an hour for about an hour的意思 because they piay basketball for an hour Let me love you for an hour