四年級(jí)下現(xiàn)在進(jìn)行時(shí)講解一

1、一、現(xiàn)在進(jìn)行時(shí)的定義，構(gòu)成，標(biāo)志性詞語(yǔ)定義：表示現(xiàn)在或現(xiàn)階段正在進(jìn)行或發(fā)生的動(dòng)作或存在的狀態(tài)。構(gòu)成： 由 be(am/is/are)+ V-ing 形式構(gòu)成標(biāo)志性詞語(yǔ)：now look listen1. 現(xiàn)在進(jìn)行時(shí).通常用“now”.eg: I am doing my homework now.2. 現(xiàn)在進(jìn)行時(shí).通常用“l(fā)ook”.eg: Look! My mother is wearing a greyhat.3. 現(xiàn)在進(jìn)行時(shí).通常用“l(fā)isten”. eg: Listen! They are reading books.、動(dòng)詞現(xiàn)在分詞的構(gòu)成規(guī)則1 一般情況下直接加ingthink-thin

2、kingsleep-sleepingstudy-studyingspeak-speaking say-sayingcarry-carrying2以不發(fā)音的字母e結(jié)尾的單詞，去掉字母e,再加ing come-coming make-makingleave-leaving have-havingtake-taking wake-waking3 以重讀閉音節(jié)（重讀閉音節(jié)即兩個(gè)輔音中間夾一個(gè)元音并且重讀的音節(jié)）結(jié)尾，呈現(xiàn) “輔，元，輔”結(jié)構(gòu)的動(dòng)詞，雙寫(xiě)末尾的輔音字母，再加 ingstop-stopping sit-sitting run-running forget-forgettingbegin-b

3、eginning這類詞還有：cut, get,hit, run, set, spit, stop, swim,beg, drop, fit, nod, dig, regret等。4 以 ie 結(jié)尾的動(dòng)詞，把ie 改為 y ，再加 ingdie-dying lie-lying tie_tying記 doing 口訣進(jìn)行時(shí)很好記,be 加動(dòng)詞 -ing;直加雙寫(xiě)去啞e, 分詞構(gòu)成須仔細(xì);別說(shuō) be 動(dòng)詞無(wú)詞義, 主語(yǔ)和它最親密;變疑問(wèn)句提前它, 變否定句be 后加 not 莫忘記 ;何時(shí)要用進(jìn)行時(shí)now， look,listen, 是標(biāo)志。趁熱打鐵：寫(xiě)出下列動(dòng)詞的現(xiàn)在分詞形式.talk sleep

4、 watch run listen make laugh lie cry sing cut write 三、現(xiàn)在進(jìn)行時(shí)的用法1）用來(lái)表示說(shuō)話時(shí)正在進(jìn)行或者發(fā)生的動(dòng)作，例如：eg:-What are you doing-I am reading a book.Mother is cooking in the kitchen. 媽媽在廚房里煮飯。What are you looking at 你在看什么2）用來(lái)表示現(xiàn)階段正在進(jìn)行的動(dòng)作（但說(shuō)話時(shí)不一定在進(jìn)行），例如：eg:He is teaching at the school.We are learning Unit5 these days.Is

5、 she writing a novel 她正在寫(xiě)一本小說(shuō)嗎(3)現(xiàn)在進(jìn)行時(shí)的句子中常有 now,或在句首常出現(xiàn)Look! Listen!等提示詞 eg:Listen! Danny is singing in the room.Look! He is doing his homework now.（4）. 用來(lái)表示即將發(fā)生的動(dòng)作，一般是指按計(jì)劃或者安排好要發(fā)生的動(dòng)作。適用于這種情況的動(dòng)詞主要有：go,come,leave,start,arrive 等。例如:I m going home in half an hour. 我一個(gè)半小時(shí)內(nèi)要回家。The train is arriving soon

6、. 火車很快就要到達(dá)了。I m coming . 我馬上來(lái) 四、現(xiàn)在進(jìn)行時(shí)的句式變化? 肯定式結(jié)構(gòu)：主語(yǔ)+be +v-ing+ 其它 .如 : I am reading a book.We are running now.? 否定式結(jié)構(gòu)：主語(yǔ)+be+not+V-ing 形式+其他. 例如：They aren t doing their homework.I am not writing my homework now.? 一般疑問(wèn)句式結(jié)構(gòu)：Be+±語(yǔ)+動(dòng)詞-ing形式+其他 例如:Is she having an English lesson回答：肯定Yes, she is. 否定

7、:No, she isn t.Are they running nowYes, they are. No, they aren t.? 特殊疑問(wèn)句式結(jié)構(gòu)：疑問(wèn)詞+be+主語(yǔ)+其他? eg:What is he doing now回答： He is swimming.一 . 用所給動(dòng)詞的適當(dāng)形式填空.! The cat(run)up the tree.twins( 雙胞胎 )(have)breakfast.(clean) the blackboard now No,he isn t.(play)the piano in the ask him to come here.! They(sing)i

8、n the classroom.漢譯英1 .我們正在上英語(yǔ)課。.2 .他們正在打掃教室.3 .湯姆正在吃早飯.4 .那對(duì)雙胞胎正在睡覺(jué).5 .男孩子們正在踢足球.6 .她正在彈鋼琴。.7 .我們正在看電視。.8 .你們正在聽(tīng)音樂(lè)嗎.二.選擇填空. mother is TV.ata book -Yes,I am. ,read ,read ,reading ,looking ,the other students . ,listen singing,is listening ,are listening singing,are listening my eraser,but I can '

9、 t it.for ,finding findingjook for looking for,find ,look for and I doing homework now.A. am,their B. are their C. is our D. are our father and mother are.A. Buses driver B.buses drivers C. bus drivers D.busdriver are talking today ' s newspaper.A. To B. with C. of D. about you like on the grass

10、A. To sit B. siting C. sitting D. both A and C9.1. his is the way our hair.A. That we comb B. to comb C. of combing D. all the above 三.句型轉(zhuǎn)換 am watering the flowers.（ 否定句 ） 's jumping now.（ 一般疑問(wèn)句）boys are playing cards.（戈U線提問(wèn)）復(fù)數(shù)句）4.He is doing his homework.（四改錯(cuò), 把錯(cuò)誤的地方下面畫(huà)上橫線，并在后面改出來(lái)。1、我的媽媽正在做早飯。M

11、y mother are makeing breakfast.2、我正要和我的朋友去看電影。I is goes to movies with my friend.3、他們正在彈吉他嗎Is he playing the guitar4、她不在拉小提琴。She isn playing violin.5、她們?cè)诟墒裁凑诖蚧@球。What is she doing They are playing the basketball.6、 Lucy 和 Mary 正在打排球。Lucy and Mary is playing the volleyball.五按要求完成下列句子I am having a birthday party.（ 一般現(xiàn)在時(shí)）tonight（ 一般將來(lái)時(shí)）sings a song in the room.now（ 現(xiàn)在進(jìn)行時(shí)）tonight（ 一般