初中英語語法:初中英語語法—現在進行時詳解和習題

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《初中英語語法—現在進行時詳解和習題》由留學liuxue86.com編輯整理。本內容整理時間為05月12日,如有任何問題請聯系我們。
    大家知道,謂語的動詞用來表示動作(情況)發(fā)生時間的各種形式稱為時態(tài)。
    現在進行時表示1、現在(說話的瞬間)正在進行或發(fā)生的動作,強調“此時此刻”。E.g. He is reading . They are talking now.
    2、當前一段時間內的活動或現階段正在進行的動作。E.g. They are working these days.
    3、某些動詞的現在進行時,表預定的計劃或即將發(fā)生的動作。E.g I am coming.
    其結構為be+現在分詞. 現在分詞的變法有
    1、一般在動詞詞尾加上-ing ,E.g. jump
    2、以不發(fā)音字母e結尾的動詞,先去e,再加-ing. E.g have write
    3、.以重讀閉音節(jié)末尾只有一個輔音字母結尾的詞,它前面是單個元音字母時要先將詞尾的輔音字母雙寫,再加上-ing. E.g. sit put
    其句式變換都在be上做文章。
    E.g. He is buying a bike.
    Is he buying a bike?
    He isn’t buying a bike.
    一般由look,listen,now, at this moment等時間狀語做標志。
    盡管現在進行時比較簡單,但在做題過程中也常會犯一些錯誤,常見的錯誤有如下幾種:
    自我檢測
    (一) 、單選
    1、 Look! He _____their mother do the housework.
    A. is helping B. are help C. is help D.is helpping
    2 、_____are the boys doing ? They are singing in the room.
    A .Who B .How C.What D.Where
    3、 Don’t talk here. My mother _____.
    A. is sleeping B .are sleeping C. sleeping D .sleep
    4 、Danny ______. Don’t call him.
    A. is writeing B .is writing C.writing D .writes
    5 、–When_____he_____back?
    – Sorry, I don’t know.
    A. does,come B.are coming C.is come D.is coming
    答案:A C A B D
    (二)、填空
    1、 It’s ten o’clock. My mother _____(lie)in bed.
    2、 What____he _____(mend)?
    3、 We _____(play)games now.
    4、 What ____you____(do) these days?
    5、 ____he ___(clean) the classroom?
    6、 Who____(sing)in the next room?
    7 、The girl____(like)wearing a sweater. Look! She ____(wear)a red sweater today.
    答案:1 is lying 2 is mending 3 are playing 4 are doing
    5 Is cleaning 6 is singing 7 likes ; is wearing
    一、把動詞變成現在分詞形式易出錯
    例:1、They are swiming.(swim)
    2 、Jenny is plaiing(play)football.
    答案:1.swimming 2 .playing
    解析:動詞變現在分詞可有如下口訣:“一添一去y不變”. “一添”指雙寫規(guī)則;“一去”指去掉不發(fā)音字母e規(guī)則;“y不變”指要與名詞變復數區(qū)分開。
    二、丟掉be動詞或忘記把動詞變成現在分詞
    例:1、 Look,two children flying.(fly) a kite in the park.
    2 、Li Mingisn’t read ( not read) a book in bed now.
    答案:1 are flying 2 isn’t reading
    解析:現在進行時肯定句的結構規(guī)律為: “be+現在分詞,缺一不可”。這一點必須牢記。
    三、對動詞或動詞詞組提問時丟掉doing
    例:1 、The students are singing in the room.(對劃線部分提問)
    What are the students in the room?
    答案:What are the students doing in the room?
    解析:現在進行時態(tài)中對動作提問可記住此句式“What +be +主語+doing+其它?”
    或簡寫為“What......doing......”?句式。
    四、現在進行時態(tài)的選擇疑問句中易忽視or后用現在分詞形式
    例:孩子們在跑還是在跳?
    Are the children running or jump?
    答案:Are the children running or jumping?
    解析: or連接的是兩個并列成分,動詞形式須一致。
    《初中英語語法—現在進行時詳解和習題》由留學liuxue86.com編輯整理