第 77 课: 在学习-3

The students are doing an experiment. 学生们在做实验。

The students are taking an exam. 学生们在考试。

The students are studying. 学生们在学习。

The students are talking. 学生们在谈话。

The boy is pushing with someone. 男孩和别人一起推。

The boy is pushing against someone. 男孩在推别人。

The boy is going around something. 男孩绕着雨伞走。

The boy is going through something. 男孩在钻过来。