精英家教網 > 初中英語 > 題目詳情

       climb the tree! It’s too small. Come down quickly!


  1. A.
    Don’t
  2. B.
    Isn’t
  3. C.
    Aren’t
  4. D.
    Do
A
試題分析：根據語境可知此題考查的祈使句的否定形式，因謂語動詞是climb是行為動詞，其否定形式要借助助動詞don’t，故選A。
考點：祈使句的否定形式
點評：祈使句常常是表達說話人對對方的勸告、叮囑、請求或命令等。因此，祈使句中一般沒有主語，但根據其句意，實際上是省略了主語you。祈使句句末用感嘆號或句號，朗讀時，常用降調。在表達請求或勸告時，在祈使句前或句末可加上please，以使句子的語氣更加緩和或客氣。祈使句一般沒有時態(tài)的變化，也不能與情態(tài)動詞連用。祈使句的肯定句式一般分為以下三種類型：1.行為動詞原形＋其他成分。2. Be動詞＋其他成分(形容詞、名詞或介詞短語等)。3. Let＋賓語＋動詞原形＋其他成分。祈使句的否定句式，通常情況下在句首加上Don’t或Never，一般分為以下四種類型：1.在祈使句的肯定句式前加Don’t，構成“Don’t＋行為動詞原形＋其他成分”。2.在Be動詞引起的肯定祈使句前加Don’t，構成“Don’t be＋其他成分(形容詞、名詞或介詞短語等)”。注意：在這種句型中be不能省略；否定副詞not不可置于be之后。3. Let引起的祈使句的否定形式有兩種：(1)Let開頭的祈使句，如果后面跟第一、第三人稱名詞或代詞的賓格，可在Let前加Don’t，也可在Let后賓格的名詞或代詞后面加not。(2)如果以Let’s開頭的祈使句，必須在Let’s后加not。4.在公共場合的提示語中，否定祈使句常用“No＋名詞/V-ing形式”結構，表示“禁止做某事”。
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