Question

为什么选A而不选C,怎样翻译

______ improving your brain takes work, the good news is there are some accessible ways to go about it.
A. While B. Since C. When D. Once

Answer 1

while 后面的句子，加动词ing 例：I got home while my mom was cooking.
而when后面的句子 一般都是原形 例：When I got home, my mom was cooking.

Answer 2

这个事while引导的让步状语从句，放在句首。而when只能引导时间状语从句，这里没有表示时间的状语，而B\D根据意思就可排除了，自然选A了。

追问

这句话怎样翻译

Answer 3

这里的while 是连词，连接让步状语从句，意思是，虽然，尽管
而大多数情况，while是作为 当。。。。的时候 比如，The teacher came in while they were talking ，时间状语从句。