外研版四年级英语下册《I helped Mum》PPT课件(第1课时)，共24页。
I went shopping yesterday.
What did you do yesterday?
Let's learn new words
Phone 给....打电话 cook 做饭，烹饪
wash 洗...... computer 电脑
really 真的吗？ what about? ...怎么样？
did do的过去式（助动词）didn’t don't的过去式（助动词）
love 爱 him 他....(宾格)
Listen and answer questions
What did they do yesterday?
他们昨天干什么了呢？
动词过去式的变法口诀：
Yesterday，表过去，要用一般过去式；
规则动词加 ed；有 e 直接加上 d；
Talk, talk, talked;
Listen, listen, listened;
Watch, watch, watched;
Phone, phone, phoned.
不规则的特殊记，are 变 were；
am/is 变 was； do/does 变 did。
... ... ...
关键词：I helped Mum PPT课件免费下载，.PPT格式；