北師大版三年級(jí)英語上冊(cè)語法知識(shí)

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以下是為大家整理的【北師大版三年級(jí)英語上冊(cè)語法知識(shí)】,供大家參考!
    否定句型:
    Don't + 動(dòng)詞原形 →例:Don't move. 不要?jiǎng)印?BR>    No + 動(dòng)詞 ing →例:No swimming. 不要游泳。
    No+ 名詞 s →例:No cameras. 不要照相。
    單復(fù)數(shù)變化
    ☆單數(shù)提問時(shí),牢記:is 用于單數(shù)
    1. How much is the ball? ——It's eleven yuan.
    2. How much is it ? ——It's nine yuan.
    ☆復(fù)數(shù)提問時(shí),牢記:are 用于復(fù)數(shù)
    1. How much are they? ——They are nineteen yuan.
    2. How much are these shirts? ——They are seventeen yuan.
    ☆用于計(jì)算: How much is eight and nine? ——It's seventeen.
    單數(shù)提問牢記:is 是、this 這個(gè)、that 那個(gè),都是指 單數(shù)
    例:Whose radio is this? 這是誰的收音機(jī)? It's Bobby's. 是鮑比的。
    復(fù)數(shù)提問提問牢記:are 是、 these 這些、those 那些 ,都是指 復(fù)數(shù)
    例:Whose CDs are these? 這些是誰的光盤? They're Ken's. 它們是肯的。
    單數(shù)變復(fù)數(shù):is 變成 are
     例如:This is ---變成 These are
     That is ---變成 Those are
    名詞單數(shù)變名詞復(fù)數(shù)(要加 s / es /變y為i再加es) 注意下列劃線部分變化
    例如:單數(shù)句型This is Ken's walkman. 變成復(fù)數(shù)→These are Ken's walkmans.
     單數(shù)句型That is Mocky's video. 變復(fù)數(shù):Those are Mocky's videos.
    復(fù)數(shù)變單數(shù):are 變成 is
    These are---變成 This is --
    Those are--- 變成 That is--
    復(fù)數(shù)名詞加了 s ,單數(shù)就變回原形
    例:復(fù)數(shù)句型: These are Ann's cassettes. 變單數(shù)→This is Ann's cassette.
     Those are Aunt Booky's CDs. 變單數(shù)→That is Aunt Booky's CD.
    句型表達(dá):
     現(xiàn)在進(jìn)行時(shí)的表達(dá)形式:動(dòng)詞+ing:
    1.直接+ing: 例如:studying 學(xué)習(xí) eating 吃
    2. 去結(jié)尾 e+ing: 例如:dancing 跳舞 writing 寫字
    3. 雙寫結(jié)尾字母+ing: 例如:running 跑步 swimming 游泳
     現(xiàn)在進(jìn)行時(shí),疑問句型: be(am, is, are)+doing
    例: What is he doing? 他在干什么?He is sleeping. 他在睡覺。
     一般現(xiàn)在時(shí)的句型
    例如:介紹房間→ This is the living room. 這是客廳。
     一般疑問句(分單數(shù)提問/復(fù)數(shù)提問):
    單數(shù)提問:Is this your pen? 這是你的鋼筆嗎?Yes, it is. 是的,它是。
    復(fù)數(shù)提問:Are these our books? 這些是我們的書嗎?Yes, they are. 是的,它們是。