Question

问几道英语语法题

1.Do you mean it was in this river_____?
A.where Tom saved the drowning boy
B.from which Tom saved the drowning boy
C.that Tom saved the drowning boy
D.that Tom saved the drowning boy in

C,D的区别，选什么？

2.The car passed by us_____ we thought was a very dangerous speed.
A.which B.at which C.at what D.what
为什么选C？

Answer 1

1.A
四个选项都是river的定于从句，“Tom救那个溺水男孩的那条河”。如果用which或that(代词)，需要之前加from(save sb from somewhere),而where 是地点副词可以直接用。
2.C
原因同第一题，“以…的速度”是“at …speed”由于速度是多少，句子中没说，不能用which.