外研版三年級英語上冊《We're making a cake》PPT課件下載，共19頁。
I am running.
I am singing.
They are playing basketball.
He is swimming.
He is going to throw the ball.
What’s she doing ?
She’s singsing .
What’s he doing ?
He ’s playing football .
What’s she doing ?
She’s listening to the radio .
動詞-ing形式的構成
一般在動詞原形后+ing
do doing
read reading
play playing
以不發音的e結尾的，去e，+ing
write writing
make making
dance dancing
重讀閉音節以一個輔音字母結尾的，雙寫這一字母+ing
get getting
run running
swim swimming
put putting
... ... ...
關鍵詞：We're making a cake PPT課件免費下載，.PPTX格式
