18 be + doing 表:1 现在进行时 2 将来时
19 be able to (+ v 原) = can (+ v 原) 能够 eg : She is able to sing She can sing
20 be able to do sth 能够干什么 eg :she is able to sing
【中考英语知识点:历届中考英语高频语法点250例1】相关文章:
★ 中考英语复习资料--中考英语重点单词用法--unless
最新
2016-02-29
2016-02-29
2016-02-29
2016-02-29
2016-02-29
2016-02-29