新概念英语第二册第43课练习(共2页).doc

NCE2学习情况记载表姓名日期 默写：第 单元授课内容 1. 讲解第43课单词、语法、课文、语言点。 本课重点结构：be able to do sth.; 比较can, could, be able to都表能够。 Can 只有现在时和过去式。Be able to 可以是任何时态 Can I use your computer? / Could I use your computer? Could语气更客气、委婉 He will come if he can./ He will come if he is able to. 可互换 He was able to go to London yesterday and he enjoyed himself very much. Was able to 表示过去已经成功地完成某事，不能用could/ can 替换 再如：He was able to leav