苏教版小学时态语法.doc

现在进行时 意义——当表示现在正在进行的动作或正在发生的事。 :be (am, is ,are )+动词现在分词-ing形式肯定句主语 + be + 现在分词V-ing (+ 其他) . 否定句：主语+be+not+动词-ing +其他. . 一般疑问句：Be+主语+动词-ing +其他? Are the children playing in the park? Yes, they are. /No , they are not. 特殊疑问句：特殊疑问词+be+主语+动词-ing+其他? What are they doing now? 现在分词的构成：(1)一般在动词末尾直接加ing,如→playing sleep→sleeping look→looking throw→throwing bark→barking listen→listening climb→climbing cry→crying call→calling wash→washing eat→eating brush→brushing drink→drinking comb→combing clean→cleaning go→going do→doing rain→raining talk→talking grow→growing open→opening sing→singing eat→eating walk→walking  (2)以不发音字母e结尾的动词，先去掉e,再加ing，如→biting write → writing have → having dance→dancing 　 (3)以重读闭音节结尾的动词，中间只有一个元音字母，词尾只有一个辅音字母，应双写末尾的辅音字母，再加ing, 如： sitting running swimming shopping 四.时间标志——now，句前的look ,listen?? 现在进行时专项练习： 一、写出下列动词的现在分词： play________ run__________ swim ________eat__________ go_________ write________ sit___________ read________ have_________ wash sleep ________ look_________ throw________ bark________ listen_________ climb________ bite_______ cry_________ clean call_________ sit ________ shop_________ brush drink comb 二、用所给的动词的正确形式填空： 1.The children __________________ ( play)in the park now. 2. Lingling_______________ ( sit)on a swing now . 3. My mother _________________ ( sit )on a bench now. 4. What _____ you ______ ( do ) now? 5. Look . He _______________( sleep). 6.The dog ____________(look) at the children now. 7.Look! Mingming ________________(throw )stones at the dog . 8.What is our granddaughter doing? She _________(drink ) water. 9. It’s 5 o’clock now. We _____________(have)supper now. 10.______Helen____________(wash )clothes? Yes ,she is . 三、句型转换： 1. They are doing housework .(分别改成一般疑问句和否定句)