新概念頻道為大家整理的 新概念英語第一冊語法講義：現(xiàn)在進行時，供大家參考。更多閱讀請查看本站 新概念網(wǎng)頻道。
    2. 現(xiàn)在進行時
    表示現(xiàn)在正在進行的動作。
    構(gòu)成： 主語+be動詞+動詞的現(xiàn)在分詞+其它成分(現(xiàn)在分詞的構(gòu)成見附錄)
    We are having lunch.
    He is reading a book.
    The dog is running after a cat.
    The boys are swimming across the river.
    ★變疑問句將be動詞移到句首
    Are we having lunch?
    Is he reading a book?
    Is the dog running after a cat?
    Are the boys swimming across the river?
    ★變否定句在be動詞后面加 not
    We are not having lunch.
    He is not reading a book.
    The dog is not running after a cat.
    The boys are swimming across the river.
    ★特殊疑問句：what, which, how, where, who, etc.
    疑問詞+動詞+主語+現(xiàn)在分詞
    What are you doing?
    What is she doing?
    What is the dog doing?
    沒有進行時的動詞(必背)
    表示狀態(tài)，思想，感情和感覺的動詞不能表示正在進行的動作
    1. 表示感覺，感官的詞
    see, hear, like, love, want,
    2. have, has當”擁有”講時沒有進行時