内容正文:
九年级全一册Unit8 语法练习题---情态动词
解析2: must “一定;想必”,表示有根据的肯定猜测。
拓展:could, may , might “可能”,表可能性推测。
can’t “不可能”,完全否定。
eg.①Mary ________ have some trouble, she keeps crying over there.
②Lily ________ be at home now. She said she was going to Beijing yesterday.
③This new book _______ be his, because his book is broken.
④The bike _____ be Alice’s. I’m not sure.
注意“情态动词”的另外用法:
1)表“能力”:can / could 会
eg. I can swim now, but I couldn’t do it a month ago. 现在我会游泳,但一个月前我不会。
2)表“请求、许可”:can / could / may 可以
eg. —Can/ Could I watch TV? 我可以看电视吗? —Yes, you can / of course. 是的,可以。
3)表“命令”:must / have to 必须
eg.—Must I go with you?我必须和你一起去吗?
—Yes, you must. 是的,你必须。
—No, you needn’t / don’t have to. 不,你不必。
4)表“不准,不可以,禁止,千万别”:mustn’t
eg. You mustn’t light fires. 你不准点火。
— __________I do homework now? —No, you ________.
A. Can ; can’t B. May ; may not C. Can ; mustn’t D. Must ; needn’t
辨析: join join in take part in attend
1)join有两个用法:
(1)指加入某个党派,团体组织等,成为其成员之一,意为:“参军、入团、入党”等。如:
She joined the Young Pioneers. 她加入了少先队。
(2)和某人一道做某事,其结构为:join sb. in (doing) sth.,根据上下文,in (doing) sth. 也可以省去 Will you join us in the discussion? 你参加我们的讨论吗?
2)join in多指参加小规模的活动如“球赛、游戏”等,常用于日常口语。如:
Come along, and join in the ball game. 快,来参加球赛。
3) take part in 指参加会议或群众性活动等,着重说明句子主语参加该项活动并在活动中发挥积极作用。 We'll take part in social practice during the summer vacation. 暑假期间我们将参加社会实践。
4)attend是正式用语,及物动词,指参加会议,婚礼,葬礼,典礼;去上课,上学,听报告等。句子的主语只是去听,去看,自己不一定起积极作用。如:
He'll attend an important meeting tomorrow. 他明天要参加一个重要的会议。
练习:
1).---Would you like to ______ us in this topic? ---Yes, I’d like.
A .join B. join in C. take part in D. attend
2).My brother _______ the Army for 3 years.
A. has joined B. has joined in C. has been in D. has attended
3)I’d like to invite you to ________ my birthday party.
A. join B. join in C. take part in D. attend
解析:noise n. 噪音 noisy 吵闹的 make a noise 制造噪音 noise-maker 噪音制造者
辨析: noise , voice, s