來(lái)源:網(wǎng)絡(luò)資源 2023-08-16 10:44:11
1. 動(dòng)詞變化:現(xiàn)在進(jìn)行時(shí)由“am /is /are+動(dòng)詞現(xiàn)在分詞”構(gòu)成。加-ing的規(guī)則如下:
(1)一般在動(dòng)詞原形末尾加-ing。如:
stay-staying do-doing
listen-listening suffer-suffering
work-working spend-spending
look-looking
(2)以不發(fā)音的字母e結(jié)尾的動(dòng)詞,先去掉e,再加-ing。如:
make-making take-taking
give-giving ride-riding
please-pleasing refuse-refusing
close-closing operate-operating
(3)以一個(gè)輔音字母結(jié)尾的重讀閉音節(jié)詞,先雙寫(xiě)這個(gè)輔音字母,再加-ing。如:
put-putting sit-sitting
run-running win-winning
begin-beginning
2. 現(xiàn)在進(jìn)行時(shí)的用法
(1)表示說(shuō)話時(shí)正在進(jìn)行或發(fā)生的動(dòng)作,這時(shí)可以不用時(shí)間狀語(yǔ),也可以和now, at present, at the moment等時(shí)間狀語(yǔ)連用。有時(shí)用一個(gè)動(dòng)詞,如look(看),listen(聽(tīng))。
eg: What are you reading now?
Listen! Someone is singing in the classroom.
(2)表示當(dāng)前一段時(shí)期的活動(dòng)或現(xiàn)階段正在進(jìn)行的動(dòng)作。
eg: They are working in a factory these days.
More and more people are giving up smoking.
(3)表示最近按計(jì)劃或安排要進(jìn)行的動(dòng)作。
現(xiàn)在進(jìn)行時(shí)有時(shí)可表示一個(gè)在最近按計(jì)劃或安排要進(jìn)行的動(dòng)作,即可以用來(lái)代替將來(lái)時(shí)。
eg: When are you leaving?
Are you going to Tibet tomorrow?
3. 現(xiàn)在進(jìn)行時(shí)的否定句和疑問(wèn)句比較簡(jiǎn)單。否定句在be(am, is, are)后面加not;疑問(wèn)句把be動(dòng)詞移到主語(yǔ)前。
eg:
I am not working.
What are you reading now?
How are you feeling today?
The train isn’t arriving soon.
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