四大时态（讲义）外研版（一起）英语六年级下册

一般现在时： 1.概念：表示经常发生或习惯性的动作、状态。 2.时间标志：usually、often、always、sometimes、every day、on+星期等 3.构成： ①主语+be动词+其它 He is a teacher. ②主语（非三单）+动词原形+其它 I often clean the room on the weekend.(动原） ③主语（三单）+动词三单形式+其它 She sometimes cleans the room on the weekend.（三单） 4.动词三单变化规则： 1. 练习题： 1. I ________(go) to school every day. 2. I sometimes _________(clean) my room on Sundays. 3. He often __________(wash) clothes on the weekend. 4. Mike always_________(take) a dancing class on Mondays. 5. She________(be) a student. 6. I _______(be) a boy. 7. They _______(be) my friends. 8. Mike often _______clothes on the weekend. A. wash B.washes C. washs 9. She _______ up at six in the morning.   A. get   B. gets   C. getting 变化 例词 一般情况 加-s eat-eats;read-reads;like-likes; 以ch, sh, s, x, 或o结尾的词 加-es watch-watches;do-does;go-goes 以辅音字母加y结尾的词 变y为i再加-es study-studies 不规则变化 特殊记 have-has 变化 例词 一般情况 加-ing eat-eating;play-playing;do-doing 不发音的e结尾的动词 去e加-ing make-making;ride-riding;have-having; dance-dancing;write-writing 重读辅元辅结尾 双写末尾字母，再加ing swim-swimming;shop-shopping;run-running 现在进行时： 1.概念：表示现在正在进行或者发生的动作。 2.时间标志：listen(听)、look(看)、now(现在) 3.结构：主语+be+动词ing+其它（注意be动词am/is/are随主语的变化而变化） 4.动词ing变化规则： 练习题： 1. They are__________(eat) bananas. 2. She _____________(drink) tea now. 3. He is ___________(climb) the mountain with friends. 4. What are they____________(do)? 5. Is he ___________(play) football? 6. I am__________(run) now. 7. Look! Chen Jie__________(make) a card. 8. Listen!The bird__________(sing) now. 9. I’m________(walk) like an elephant. 10. Why are you __________(shop) today? 11. My friends__________(draw) a picture now 学科网（北京）股份有限公司 学科网（北京）股份有限公司 一般过去时 一、结构: ① be动词（is, am, are）→ was/were 主语 + 谓语 ② 实义动词→相应的动词过去式 含义： 1 表示过去的事实或状态。 例：He was very busy an hour ago. 他在过去的一小时非常忙碌。 I was eight years old last year. 我去年8岁。 2 表示在过去某个时间内所作的事情，常和表示过去的时间状语连用。 例：She bought many books yesterday. 昨天她买了很多书。 I played table tennis with m