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概念:表示现在正在进行的动作和发生的事
现在进行时的标志性词语有now, look, at the moment, listen等
现在进行时的基本构成:主语+be动词+现在分词
Eg: They are drawing pictures.
现在分词的构成规则:
1.一般在动词词尾加-ing,如:read-reading
2.以不发音e结尾,去e加-ing,如:write-writing
3.以重读闭音节结尾的动词,末尾只有一个辅音字母,应先双写这一字母,再加-ing。
Eg:swim-swimming run-running cut-cutting shop-shopping sit-sitting
特殊变化:lie-lying平躺,die-dying死亡
1.肯定句—主语+be+doing
Eg: I am doing my homework.
2.否定句—主语+be+not+doing
Eg: I am not doing my homework.
3.一般疑问句—be提到句首(注意人称变化)
Eg: Are you doing your homework?概念:表示现在正在进行的动作和发生的事
现在进行时的标志性词语有now, look, at the moment, listen等
现在进行时的基本构成:主语+be动词+现在分词
Eg: They are drawing pictures.
现在分词的构成规则:
1.一般在动词词尾加-ing,如:read-reading
2.以不发音e结尾,去e加-ing,如:write-writing
3.以重读闭音节结尾的动词,末尾只有一个辅音字母,应先双写这一字母,再加-ing。
Eg:swim-swimming run-running cut-cutting shop-shopping sit-sitting
特殊变化:lie-lying平躺,die-dying死亡
1.肯定句—主语+be+doing
Eg: I am doing my homework.
2.否定句—主语+be+not+doing
Eg: I am not doing my homework.
3.一般疑问句—be提到句首(注意人称变化)
Eg: Are you doing your homework?