标题: 关于语法笔记上的细节2个问题 can/be able to [打印本页] 作者: crack25 时间: 2011-6-5 17:38 标题: 关于语法笔记上的细节2个问题 can/be able to 1.can和be able to的区别:
You can say that somebody is able to do something, but can is more usual.
Bau can has only two forms: can and could. So sometimes it is necessary to use be able to.
For instance: I will be able to get the car in a week.
就是说不需要从意思上（能力还是可能性）加以区分，只要注意时态和对称的角度看哪个更合适就行。
**: can和be able to在与主语搭配逻辑上没有问题的情况下(如主语都是”人”，而不是物)，可以平行。
笔记上说的这个，从时态角度区分，感觉有些不明白，时态是想说如果 could 和is able to这两个出现的话，要根据原句的时态来判断吗？可是could 也可以出现在一般时中吧！！。这个涂蓝的地方到底想说什么？ 谢谢各位作者: crack25 时间: 2011-6-5 18:51
224. (GWD-12-Q13) Although energy prices have tripled in the United States over the last two years, research indicates few people to have significantly reduced the amount of driving they do, nor are they making fuel efficiency a priority when shopping for cars. A. few people to have significantly reduced the amount of driving they do, nor are they making B. few people having significantly reduced the amount of driving they do or made C. that there are few people who have significantly reduced the amount of driving they do, nor having made D. that few people have significantly reduced the amount of driving they do and are not making E. that few people have significantly reduced the amount of driving they do or made
