七年级英语(下)复习提纲四
11.don’t sing songs at night. 12.don’t talk when you eat.
13.don’t wear hats in class. 14.do homework by 10:00.
15.clean your house! 16.make the bed.
17.can we ……? yes ,we can . no, we can’t.
eg:can we arrive late for class ? no, we can’t. we can’t arrive late for class.
18.do you have to wash your clothes? yes, i do./no, i don’t.
三. 重难点解析:
1. 情态动词have to 的用法,意思是"必须、不得不",它侧重于客观上的必要和外界的权威。(1)结构:主语+have to+动词原形+其他
(一般现在时,主语是第三人称单数时,用has to;句子是过去时,用had to.)如: we have to wear sneakers for gym class. 在体育课上,我们必须穿运动鞋。tom has to practice the guitar every day. 汤姆每天必须练习弹吉它。i had to get up at 5:00 am last monday. 上周一,我不得不早上5点起床。
(2)否定形式:主语+don't have to+动词原形+其他
(一般现在时,主语是第三人称单数时,用doesn't have to. 句子是过去时,用didn't have to)
如:nick doesn't have to wear a uniform. 尼克不必穿制服。we didn't have to do our homework at once. 我们不必马上完成作业。
(3)疑问句:do (does或did)+主语+have to +动词原形+其他
如:do you have to stay at home on weekends? 周末你必须呆在家里吗?yes, i do. / no, i don't.
是的,我必须。不,我不必。did he have to go to bed by 11:00 last night? 昨晚,他不得不11点前上床睡觉吗?
2. 情态动词can的用法
(1)表示能力,"会能"(在第一册中已经学习这种用法)
can you play the guitar? 你会弹吉它吗?judy can speak a little chinese. 朱蒂会说一点中文。i can dance and sing. 我能唱歌又能跳舞。
(2)表示允许、许可,"可以"、"能"(在这一课中新学的词义)
can the students run in the hallways? 学生们可以在走廊上跑吗?we can eat outside. 我们可以在外面吃东西。can i come in? 我能进来吗?
注意 同样是情态动词,can 和have to 的用法是有区别的,和大部分情态动词一样,can在否定句中,直接在can后加上not,在疑问句中,把can放到主语前面,并且没有人称和数的变化。
3. hear,listen和sound都有"听"的意思,但三者是有区别的。
(1)hear"听说",侧重于"听"的内容
i'm sorry to hear that you are ill. 听说你生病了,我很难过。
i never heard such an interesting story. 我从来没听过这么有趣的一个故事。