人教版七年级英语下册Unit12 what didi you do last weenkend ? Section A Grammar Focus-3c课件（该课件内含音频文件）
A family of mice were in the kitchen on Saturday morning when they saw a big cat. Baby Mouse was afraid and climbed onto his father’s back. Father Mouse shouted at the cat, “Woof, woof!” The cat quickly run away. “Wow, Dad, you’re good!” said Baby Mouse. “Well, son, that’s why it’s important to learn a second language, ”answered Father Mouse.
动词一般过去时，表示过去发生的事。 be用was 或用were; have, has 变had。
谓语动词过去式，过去时间作标志。 一般动词加-ed，若是特殊得注意。
否定句很简单，主语之后didn’t 添。 疑问句也不难，did 放在主语前。
若是谓语之前有did,谓语动词需还原。 动词若是was, were, 否定就把not 添。
