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构成 be + 动词ing
I am skating.
Talk about what are you doing at home?
Look and say(找规律)
drawing
doing
cooking
listening
having
writing
taking
making
running
swimming
shopping
动词加ing 形式：
1、直接加ing. 如：cook--cooking.
2、以不发音的“e”结尾，去掉“e”再加ing. 如：take--taking.
3、双写末字母再加ing. 如： swim--swimming.
Read and write(写出动词的ing 形式)
read -- take-- write --
wash-- play-- run--
catch-- have-- swim--
fly-- clean-- make--
read -- reading take-- taking write -- writing
wash-- washing play-- playing run-- runing
catch-- catching have-- having swim--swimming
fly-- flying clean-- cleaning make--making
现在进行时的标志
1、Look! Sarah is singing a song.