一道选择题
______many times, but he still didn't know how to use the computer. A)Having been told B)Though he had been told C)He was told D)Having told
选 C) 因为A) 选项都会使句子没有主语。 B) Though and but不能同时用 D)是主动用法，而句子应该是被动
答：1、（C） no sooner... than... "一...就..." 引导时间状语从句,主句用过去完成时,"than"后面的从句用一般过去时，No soo...详情>>
答：B 被动语态，be found to do. A中的made与found均为过去分词，冲突！详情>>
问：hArd work 和hArd--working有什么区别
答：一个是名词 一个是形容词撒详情>>
