go to bed 和sleep的区别是什么?

go to bed 和 go to sleep 用法有什么区别哪一个是正确的说法? go to bed 和sleep的区别是什么? go to sleep /bed 区别 GO TO SLEEP和GO TO BED有什么区别? go to bed与go to sleep的区别 be in bed,go to sleep,be asleep,go to bed的区别 go to bed go sleeping go to sleep 区别 sleep,go to bed,fall a sleep 的区别及用法 fall asleep与go to bed 和go to sleep有什么区别 go bed和go to bed的区别 上床睡觉是go to bed还是go to sleep?这两个有什么区别 go to sleep翻译词组,并指出其与go to bed的区别 go to sleep be asleep be asleep in go to bed 的区别 英语sleep in bed 和sleep on bed 的区别 fall asleep,go to sleep,get to sleep,go to bed 这四个短语有什么区别及翻译和用法 20.You look so tired tonight.It is time you _____.A.go to sleep B.went to sleep C.go to bed D.went to bed这道题为什么选D不选B?go to sleep和go to bed怎么区别 ,这里为什么一定要用go to bed呢? go to sleep 和fall asleep的区别是什么 be in bed,be asleep,go to bed,go to sleep,fall asleep,sleep的区别是什么?还有seat,seated,sitting,sit,a seat,seats的区别~感激不尽……