現(xiàn)在進(jìn)行時(shí)

    ——表示現(xiàn)在正在進(jìn)行的動(dòng)作

    構(gòu)成：主語(yǔ)＋be動(dòng)詞＋動(dòng)詞的現(xiàn)在分詞＋其它成分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(dòng)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(dòng)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(dòng)詞
＋主語(yǔ)＋現(xiàn)在分詞What are you doing？

    What is she doing ？

    What is the dog doing ？

    沒有進(jìn)行時(shí)的動(dòng)詞（必背）

    表示狀態(tài)，思想，感情和感覺的動(dòng)詞不能表示正在進(jìn)行的動(dòng)作：

    1.表示感覺，感官的詞see ， hear ， like ， love ， want

    2. have ， has當(dāng)“擁有”講時(shí)沒有進(jìn)行時(shí)