get through 、get in、 get into区别在于意思不同。
1. get through：通过；到达；做完；接通电话；度过，熬过(困难时期等)。
例句：
First I have to get through the exams.
首先我必须通过这些考试。
I can't get through to this number.
我打不通这个号码。
Let's start—there's a lot to get through.
咱们开始吧—有很多事要处理呢。
2. get in：进入；到达；陷入；收获。
举例；
Get in! There's bags of room.
进来吧！地方很空。
They had to knock the door down to get in.
他们不得不破门而入。
His idea, helping farmers get in their crops, interested us very much.
他那帮助农民收割庄稼的想法使我们很感兴趣。
I'm definitely going to get in touch with these people.
我一定要联系上这些人。
3. get into：进入；陷入；穿上；习惯于。
举例：
She failed to get into art college.
她未能进入艺术学院。
I want you to get into a whole new state of mind.
我想让你进入一种全新的心态。
Don't let yourself get into bad habits.
别让自己染上恶习。
注意：get in 和get into都有进入的意思，get in后面可以不接内容，此时in是副词；get into后面一定要接宾语。