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问题: 谢谢,请帮忙!

1. The boy dived into the water and after __ seemed to be a long time , he came up again.


a. what b. that c. it d. which


2. ---Anthony told me once he had a fall and broke his arm.


---___ was that?


a. since when b. how long ago c. from when c. for how long


3. I shallnever forget these days __ I spent with the farmers, __ has a great effect on my life.


a. when,which b. that, which c. which, that d. when, who

请说明为什么?

解答:

1. The boy dived into the water and after _a. what_ seemed to be a long time , he came up again.


a. what b. that c. it d. which选a,
单独用时 用it, 但在这里时放在after 后,代替"所....的时间",所以用what.


2. ---Anthony told me once he had a fall and broke his arm.


---__b. how long ago _ was that?


a. since when b. how long ago c. from when d. for how long
选b,问句中told me once 时指过去某时,如果用a,d, 句中要用现在完成时.c项不存在.

3. I shall never forget these days _that _ I spent with the farmers, which__ has a great effect on my life.


a. when,which b. that, which c. which, that d. when, who
选b, 第一空作定语从句中spent的宾语,不能用when;第二空非限制性 定语从句.用which指these days.不能用that 或when(缺主语).