get behind
US /ɡet bɪˈhaɪnd/
UK /ɡet bɪˈhaɪnd/

短语动词
1.
落后, 拖延
to fail to make enough progress or to be late with something
示例:
•
I've got behind with my work.
我的工作落后了。
•
If you miss a few classes, you'll soon get behind.
如果你缺了几节课,你很快就会落后。
在 Lingoland 学习这个单词