get back
1．return to one's starting point 回来；返回原地
I expect my wife to get back at about eight tonight．我盼望我妻子今晚8点回来。
She got back home dead tired．她回到家里累得要命。
2．regain 取回；收回
Stop worrying about the money you lent him． You'll get it back．不要担心借给他的钱，你会收回的。
I am unwilling to lend books，be cause it's so difficult to get them back．我不愿借书出去，因为索还是太难了。
You can't get back your youth once it's gone．青春一去不复返。
3．go to a reasonable，sensible distance；stand away 让开；闪开；后退
The police had great difficulty in making the curious crowd get back and let the ambulance through． 警察费了很大的劲才使那些好奇的人群让开，使救护车开过去。
Get back！ The wall is collapsing．闪开！墙要倒了。
4．return sth． or sb．to its or his place 使某物或某人回到原处；还回；送回
He took the spring out of the clock，but now he can't get it back．他把钟里的发条拿了出来，但现在放不进去了。
If you take my son out for a drive， you must promise to get him back before 5．如果你要开车带我儿子出去玩，你得答应5点之前把他送回来。
I got the book back before he noticed it was missing．我把书及时还了回去，免得他以为书丢了。