小学英语知识点大全 4页

小学英语现在进行时（讲解、练习）一、概念现在进行时表示说话时正在进行或发生的动作结构：主语+be(am/is/are)+现在分词.二、现在分词的构成：1.大多数动词后可在动词后直接加-ing．　Eg:carry-carrying,catch-catching,drink-drinking2.如果动词以-e结尾,则去掉-e,再加-ing,　如come-coming,have-having,make-making,ride-riding,write-writing,take-taking,use-using3.如果动词只有一个元音字母,而其后跟有一个辅音字母时,将此辅音字母双写,再加-ing　如：hit-hitting,let-letting,put-putting,run-running,sit-sitting．三、句型结构：1.现在进行时的肯定形式、否定形式、疑问形式及其回答,所有变化都体现在助动词be(is/am/are)上．　1)现在进行时的肯定形式：主语+be(am/is/are)+doing+其他成分　　Iamsinging.Theyarewriting.　2)现在进行时的否定形式:主语+be(am/is/are)+not+doing+其他成分　　Iamnotsinging.Theyaren’twriting.\n　3）一般疑问句及回答：be(am/is/are)+主语+doing+其他成分　　AmIsinging?Yes,youare./No,youaren’t.　　Aretheywriting?Yes,theyare./No,theyaren’t.　4)特殊疑问句及回答:特殊疑问词+be(am/is/are)+主语+doing+其他成分　　Whatareyoudoing?Weareplaying2.缩写形式如下:Iam---I’mYouare---You’reHeis---He’s练习一.用现在进行时完成下列句子:1.____you___(fly)akite?Yes,_______.2.______you_____(sit)intheboat?3.______he________(talk)withme?4.We__________(play)footballnow.5.What_________you__________(do)?6.I_________(sing)anEnglishsong.7.What______he_______(mend)?8.He___________(mend)acar.9.Theseboys_____(play)tennisontheplayground.\n10.Mymother______________(cook)inthekitchen.11.Wecan’thelpyou,becausewe____________(have)classes.12.________theboy___________(write)hishomework?13.Look!Thesebutterflies_________(fly)inthesky.14.Listen!Thegirl___________(sing)inthenextroom.15.Thenaughtyboy__________(swim)intheriver.二.选择1.Look.Lucyis_____anewbiketoday.　A.jumping　B.running　C.riding　Dtaking2.Thechildren_____football.　A.isplaying　B.areplaying　C.playthe　D.playa3.They______TVintheevening.Theydotheirhomework.\n　A.arewatching　B.can’twatching　C.don’twatch　D.don’twatching4.Listen!She____intheclassroom.　A.issinging　B.sing　C.tosing　D.issing5.______areyoueating?I’meating______meat.　A.What,some　B.Which,any　C.Where,not　D.What,a6.Isshe____something?　A.eat　B.eating　C.eatting　D.eats14.Look!Thechildren_______basketballontheplayground.　A.plays　B.played　C.isplaying　D.areplaying