小学英语时态之现在进行时ppt课件.ppt

小学英语时态之 —现在进行时
四种时态
现在进行时
一般现在时
过去时
将来时
现在进行时
构成:主语+be+动词ing
Tom is doing his homework.
第一人称+am+v-ing
第二人称+are+v-ing
第三人称+is+v-ing
   I’m/You’re/He’s /She’s /We’re/They’re (not) working.
定义:现在进行时表示现在或当前一般时间正在进行的动作。
现在进行时
口诀:我用am,你用are,is用在他她它,单数名词使用is ,复数名词使用are
动词ing的变化规律:
1)直接加ing ,如: open-opening, clean-cleaning, meet-meeting, sing-singing, study-studying, …
现在进行时
2) 去掉词尾不发音的e ,如:take-taking, close-closing, ing, drive-driving, have-having, use-using, write-writing, practice-practicing, e-ing …
3) 重读闭音节的,双写最后的字母,加 ing , 如: sit-sitting, put-putting, begin-beginning , get-getting, swim-swimming, run-running, cut-cutting,, …
现在进行时
Zheng (read) a book now.
2. The rabbits (jump) now.
3.. Look ! Tom and John (swim).
4. My brother (make) a kite in his room now.
5. Look! The bus (stop).
6. We (have) an English class now.
现在进行时
7. Listen! Someone is (come).
8. They (catch) butterflies now.
9. He (do) an experiment now.
10. They (collect) stamps now.
11. Look! He (dive) now.
12. Tom ( watch ) TV in the dining room.
现在进行时
1)现在进行时的肯定形式:主语+be (am/ is/are) +doing+其他成分
I am singing . They are writing .
2)现在进行时的否定形式:主语+be (am/ is/are) +not +doing+其他成分
I am not singing . They aren‘t writing .