to lag behind
[phrase form: lag]
01
落后, 进展缓慢
to develop or progress more slowly than someone or something else
语法信息
形态构成
短语
动作动词
规则
不可分离
小品词
behind
基本动词
lag
现在时
lag behind
第三人称单数
lags behind
现在分词
lagging behind
一般过去时
lagged behind
过去分词
lagged behind
例子
The student is lagging behind in his studies and needs extra help.
这个学生在学业上落后了，需要额外的帮助。
