新概念英語第一冊語法總結：現在進行時大綱

現在進行時

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——表示現在正在進行的動作

構成：主語＋be動詞＋動詞的現在分詞＋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動詞後面加 not
　　We are not having lunch.
　　He is not reading a book.
　　The dog is not running after a cat.
　　The boys are not swimming across the river.

★特殊疑問句：what, which, how, where, who, etc.
　　疑問詞＋動詞＋主語＋現在分詞
　　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，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