九年级 Unit 12 学习重点

【人教版】九年级（上册）英语知识点

Unit 12重点词组、句型和知识点归纳

【重点短语】

1. take a shower 淋浴

2. leave my backpack at home 把背包忘在家里

3. get back to school  返回学校

4. start teaching  开始教学

5. go off  响铃

6. rush out the door 冲出房门

7. give sb a lift  捎某人一程

8. miss both events  错过两个事件

9. be about to do sth  正要做某事

10. stare in disbelief at  难以置信地盯着

11. raise above the burning building 从正在燃烧的楼上升起

12. jump out of bed 跳下床

13. collect the math homework 收数学作业

14. show up 赶到，出现

【重点句型】

1. By the time I got up, my brother had already gotten in the shower. 当我起床时，我哥哥已经进了浴室了。

2. By the time I got outside, the bus had already gone. 当我出来时，公汽已经走了。

3. When I got to school, I realized I had left my backpack at home. 当我到达学校时，我才意识到我把背包忘在家里了。

4. By the time I walked into class, the teacher had started teaching already. 当我走进教室时，老师已经开始讲课了。

 5. By the time I arrived at the party, everyone else had already showed up. 当我到达晚会时， 其他的每个人都已经到了。

6. When he put the noodles into the bowl, he realized he had forgotten to add the green beans. 当他把面条放进碗里时，他意识到他忘了添加绿豆荚了。

7. Before she got a chance to say goodbye, he had gone into the building. 在她得到一个向他告别的机会之前，他已经进入楼房了。

【考点详解】

1. By the time I got outside, the bus had already left. 当我出来的时候，公共汽车已经走了。

by the time作连词引导时间状语从句，当从句用一般过去时，主句用过去完成时；当从句用一般现在时，主句用一般将来时或将来完成时。

如：By the time he was ten, Tom had built a chemistry lab himself. 等到了十岁的时候，汤姆自己建了一个化学实验室。

I’ll be in bed by the time you get home. 你到家时，我已经上床睡觉了。

2. When she got to school, she realized she had left her backpack at home. 当她到学校时，她意识到她把背包忘在家里了。

表示“把某物忘在某处”要用词组leave sth in/on/at...

如：I've left my umbrella at home. 我把伞忘在家里了。

I left my book on the desk. 我把书忘在桌子上。

forget意为“遗忘某物”，指忘记一件具体的东西，但不能有具体的地点。

如：I forgot my umbrella yesterday. 我昨天忘了带伞。

Don't forget the cases.  别忘了带箱子。

3. Last Friday night, my friend invited me to his birthday party.

上周五晚上，我朋友邀请我参加他的生日晚会。

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