1.But I decided to dismbark _____ anything.

1.But I decided to dismbark _____ anything.
a.before I would buy b.before buying
2.The man said that although the pen was worth 50 pounds,as a special favour,_____ for 30 pounds.
a.he would let it to me b.he might give me
以上答案分别是 B ,B.请问为什么,那么另外一个答案什么不对?

第一题,如果是before I would buy那么后面不应该是anything,只能是something,因为这样是一个时间状语从句,是句子,anything是否定句中才能用的,b选项中before是介词,所以是buying,anything是任何东西的意思,没有否定意义.
第二题,简单的看可以是let是感官动词,后面不加to,let do.他这句是用中文白话翻译了,他将30英镑把它让给我.其实不用,只要翻译成他可以30英镑给我就可以了.
做选择题一定要把答案带到空里去试试,你就会比较出哪个答案更合适