現(xiàn)在進(jìn)行時(shí)的構(gòu)成：Be+v+ing. 助動詞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)的活動或現(xiàn)階段正在進(jìn)行的動作。
We are waiting for you.
I’m doing my homework now.
They are watching TV.
b. 習(xí)慣進(jìn)行：表示長期的或重復(fù)性的動作，說話時(shí)動作未必正在進(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）
|
1 |
begin |
2 |
come |
||
|
3 |
eat |
4 |
know |
||
|
5 |
show |
6 |
sit |
||
|
7 |
speak |
8 |
go |
||
|
9 |
see |
10 |
do |
||
|
11 |
have |
12 |
wear |
||
|
13 |
ride |
14 |
feel |
||
|
15 |
study |
16 |
sing |
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?