swim- swimming run- running 先双写该辅音字母, 再加-ing 变ie加y再加ing die-dying lie-lying
ppt课件
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三、掌握系动词be, look, feel, smell, get, become, turn, keep等的基本用法;
常见的连系动词有:become, turn, get, grow, keep, feel, look, seem, smell, fall等。它 们后面常接形容词,构成系表结构。
These cups are made in China. 这些杯子是中国制造的。 (被动语态) 20 ppt课件
(2)have (has, had, having)与过去分词结合,构成 完成时。 They have known each other for twenty years. 他们互相认识有二十年了。(现在完成时) He had built a chemistry lab for himself at the age of ten. 他十岁时就已经为自己建了一个化学实验室。 (过去完成时) (3) 助动词do (does, did) 后只能跟动词原形,与 not及其他动词结合构成否定句,或置于主语之前构 成疑问句。 He does not speak English.他不说英语。 When did he come back? 他什么时候回来的?
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不及物动词
1.没有被动形式的词 happen,occur,rise,lie,die
2.主动表示被动的词。 动词+ (well,poorly,easily)