We see her when she passes the classroom.(为什么填passes)

问题描述:

We see her when she passes the classroom.(为什么填passes)
Go across the street when the light is green.(为什么填across)
Will you please show me how Ican get to the factory?(为什么填get)
It's about ten minutes' ride.You had better take a bus.(为什么填take)
沿着这条街走,你就能看见那个图书馆在你的左边.
Go down this street,and you can see the library to your left.(为什么填down,to)
你必须今晚完成作业.
You have to finish your homework this evening.(为什么填have to)

第一句话,when后一般不跟进行时,一般式表示我们看到的时候她在经过,两个动作同时发生第二句,across是介词,go across=cross 表示横穿 过马路等第三句,get to 表示到达 等同于reach ,arrive at/in第四句,take a bus表...