[10-20 18:11:12] 来源：http://www.67xuexi.com 高一英语 阅读：85231次
ix. plenty of
x. 24、keep doing sth.一直干，后跟状态性动词
1. keep on doing sth.反复干……，强调动作的重复
xi. 25、It is…for sb to do sth
1. It is…that-clause
xii. 26、happen
xiii. 主(人)+happens+to do
xiv. It(形主) +(so)happen +that-clause
xv. 27、allow(vt.)
xvi. a. allow+ 名/形 b. allow+含有不定式的复合宾语
xvii. c. allow+动名词 d. allow+sb.+介词短语/副词
xviii. 28、连系动词的分类：
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