标题: 关于can 和be able to [打印本页] 作者: fatmoe 时间: 2013-3-13 07:17 标题: 关于can 和be able to
A president entering the final two years of a second term is likely to be at a severe disadvantage and is often unable to carry out a legislative program.
(A) likely to be at a severe disadvantage and is often unable to
(B) likely severely disadvantaged and often unable to
(C) liable to be severely disadvantaged and cannot often
这个为什么选A不选C呢?是liable的问题吗?我记得can 优于 be able to ...作者: zxc1118zxc 时间: 2013-3-13 20:00
can 和be able to 的优先级是相同的
但can 能表示可能的意思,所以后面可以加被动,be able to 只能表示能够,后面不能加被动。