Unit 4 How was your school trip? 一般过去时. 完成句子1. 我去年常遇到她。I often _ her last year. 2. 汤姆2012年买了套新房子。Tom _ a new house in 2012. 答案:1. met 2. bought3. 他们两小时之前乘公交车回学校了。They _ back to school by bus two hours ago. 4. 我们上个假日过得很愉快。We _ fun on our last day off. 5. 他年轻时当过演员。He _ an actor when he _ young. 答案:3. went 4. had 5. was; was. 句型转换1. Bob was late for the meeting yesterday. (改为否定句)Bob _ late for the meeting yesterday. 2. There were some seals at the aquarium. (改为一般疑问句)_ _ any seals at the aquarium? 答案：1. wasnt 2. Were there3. Alice went shopping last night. (改为否定句)Alice _ _ shopping last night. 4. We visited the Great Wall last Sunday. (改为一般疑问句)_ you _ the Great Wall last Sunday? 答案：3. didnt go 4. Did; visit【探究总结】(一)一般过去时的含义与用法一般过去时表示_某个时间发生的动作或存在的状态。常与表示过去的时间状语连用， 如yesterday, last week, in 2011, three days ago等； 也可以表示过去经常或反复发生的动作，常与often，always等频度副词连用。过去(二)一般过去时态的句式1. 肯定句：“主语+was/were+. . . ”或“主语+行为动词的过去式+. . . ”2. 否定句：“主语+wasnt/werent+. . . ”或“主语+didnt+ _+. . . ”3. 一般疑问句：把_提前或“_ +主语+_+. . . ? ”动词原形was/wereDid动词原形本单元以谈论过去发生的事情为语言目标，围绕这一目标，以school trip, day off为话题，引导学生学习使用一般过去时谈论过去发生的事情。类似的话题像春(秋)游、野营、志愿活动、组织参加派对等都是练习使用目标语言的好素材，也是各类考试中常考的话题之一。【习作练习】上个周末你过得好吗？具体说说你是怎样度过的？去哪儿了？怎么去的？和谁一块去的？做了些什么？当时天气怎么样？请根据以上提示，记叙你的一个周末，要求70个词左右。_【思路点拨】(1)本文要求记叙周末的事情，所以确定使用一般过去时。一方面，要注意提示内容，并在记叙的过程中注意事情发生的先后顺序，确保记叙的条理性。另一方面，还要注意动词的过去式的用法，尤其是不规则动词的过去式的用法。(2)单元实用短语储备have a great time, hang out, take photos, at the end of, have fun doing sth. 【佳作鉴赏】I had a really great time last weekend. As usual, I got up early. After breakfast, I hung out with my friends in the park. The air in the park was really nice. We took many photos and enjoyed ourselves. At noon, we had a picnic together. In the afternoon, we went to the bookshop and bought some interesting books. I went back home at around 5:00. At the end of the day, it began to rain. So I took out a storybook and had fun reading it. What a happy weekend I had!