21.2比较can和be able to-模样形状动词 21.2比较can和be able to 1)can/could默示本领;年夜概(过往时用could),只用于现在式和过往式(could)。be able to可以用于各种时态。例如: They will be a... /
2010-06-08 / 查看
1235 次
范文:事后告之对方利便联系的时候 Dear Mr. / Ms, I am at present in Hamburg visiting the harbour with a view to IT known our new type of container for use in Europe. I shall be in Antwerp on ... /
2010-06-12 / 查看
1197 次