Question

because of the heavy traffic,it was already time for lunch break___she got to her office.

A.since B.that C.when D.until
请解释一下，最好能告诉我什么时候用that,what,when等等，谢谢

Answer 1

because of the heavy traffic,it was already time for lunch break when she got to her office.
翻译出来时：由纤迹猜于交通堵塞，当她到达办公室的时候，已经是午饭时间了。这里when的意思就是“。。的时候”。

since的意思毁型是自从，肯定不对。that是引导定语从句，这里如果用that肯定不对。until是“直到。。时间州搭”的意思，这里也不通

Answer 2

C.when

1 it was 5:00 WHEN she got back.
2 it was at 5:00 THAT she got back
3 she didn't get back UNTIL 5:00
4 IT is three hours SINCE she left her office

Answer 3

因为车太多，当她赶到办公室时已经是午餐时间了薯搭颂。
that是引导定语从句，前面所修饰得此应该是名词性人或物；when修饰的是时间，如这里是time；what本身要充当数郑从句的主语或者宾语/名词性表语。
不懂就继续追问，不过最好有枝庆具体例子。

Answer 4

that 是定语从弯备悔句，这个应该是that。
when是时间状语从句滚芹用在，it is already the lunch time when she got to the office。埋正
what 不会用在这里吧！

Answer 5

C、由when都引导时间状手宽语从句，“当。。信谈。时候”的意思，其它的不滑薯碰符合语意，
意思是：由于交通阻塞，当她到达办公室时已经是吃中饭的时候了。

Answer 6

c