現在進行時表示正在做某事
A、構成形式：主語+be動詞+動詞的`ing形式+其他。
B、判斷依據：句中往往有now、look、listen等詞。注意：千萬不要忘了一定得有be動詞。
練一練：
A、用所給的動詞的正確形式填空。
1) The boy ______ ______ ( draw ) a picture now.
2) What______you ______ ( do ) now?
3) Listen. Some girls ______ ______ ( sing ) in the classroom.
4) My mother ______ ______ ( cook ) some nice food now.
5) Look. They ______ ______ ( have ) an English lesson.
6) They ______ ______ ( not water ) the flowers now.
7) Look! the girls ______ ______ ( dance )in the classroom.
8) What is our granddaughter doing? She ______ ______ ( listen ) to music.
9) ______ Helen ______ ( wash )clothes? Yes, she is .
B、根據中文，完成句子，每空一詞。
1) 劉濤的父親正在澆花。
Liu Taos father is ______ ______.
2) 看，孩子們正在操場上踢足球。
Look! The children ______ ______ ______ in the playground.
3) 她正在公園裡散步嗎?是的。
