現(xiàn)在進(jìn)行時(shí)的構(gòu)成：Be+v+ing. 助動(dòng)詞be的形式要根據(jù)主語的人稱和數(shù)來決定。
1、現(xiàn)在進(jìn)行時(shí)的標(biāo)志：Look!Listen!Now等詞
2、現(xiàn)在進(jìn)行時(shí)的基本用法：
a. 表示現(xiàn)在( 指說話人說話時(shí)) 正在發(fā)生的事情或當(dāng)前一段時(shí)間內(nèi)的活動(dòng)或現(xiàn)階段正在進(jìn)行的動(dòng)作。
We are waiting for you.
I’m doing my homework now.
They are watching TV.
b. 習(xí)慣進(jìn)行：表示長(zhǎng)期的或重復(fù)性的動(dòng)作，說話時(shí)動(dòng)作未必正在進(jìn)行。
Mr. Green is writing another novel(小說).
(說話時(shí)并未在寫，只處于寫作的狀態(tài)。)
3、動(dòng)詞-ing的變形規(guī)則
1）一般情況直接加-ing。
Play—playing look—looking go—going
2）以不發(fā)音的e結(jié)尾，去e加ing。
Write—writing take—taking close—closing
3）重讀閉音節(jié)，雙寫末尾的字母，再加ing。
Swim—swimming put—putting run—running
練習(xí)一（寫出下列單詞的-ing形式）
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1
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begin
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2
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come
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3
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eat
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4
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know
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5
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show
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6
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sit
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|
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7
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speak
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8
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go
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|
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9
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see
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10
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do
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11
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have
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12
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wear
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|
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13
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ride
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14
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feel
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15
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study
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16
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sing
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練習(xí)二（用所給單詞的適當(dāng)形式填空）
1.Look!The grandma ________(run)after the grandson.
2.Listen!The students _______(sing)an English song.
3.Don’t go out.It___________(rain)hard now.
4.Tom _______(read) a book now.
5.The children _________(not listen) to the music now.
6.Are they _______(have) breakfast now?
7.Is your father _________(fish) now?
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