《八上Unit2SectionB.ppt》由会员分享，可在线阅读，更多相关《八上Unit2SectionB.ppt（16页珍藏版）》请在三一文库上搜索。
1、,Section B,词 汇 点 睛,句 型 透 视,Section B,1 percent n. 百分之,词 汇 点 睛,观察 We found that only fifteen percent of our students exercise every day. 我们发现，只有百分之十五的学生每天锻炼。 Thirty percent of time passes.百分之三十的时间过去了。,探究 percent也可以写作per cent，其符号为%。percent没有复数形式，一般与介词_连用，其后的谓语动词的形式由其所修饰的名词或代词来决定。,of,Section B,活学活用 Abo
2、ut _ the students took part in the camp. A40 percent B40 percents C40 percent of D40 percents of,解析 C 百分比中的percent不用复数形式，且常与介词of连用。,through prep.以，凭借，穿过 观察 We think the best way to relax is through exercise. 我们认为最好的方法是通过锻炼来放松。,探究 本句中through作“凭借/通过(方法或手段)”讲，其后通常可接名词或动名词。,Section B,辨析 through与across t
3、hrough为介词，意为“穿过”，指从物体内部穿过；across为介 词，意为“穿过”，表示从物体表面穿过。如： The River Thames flows through London.泰晤士河流经伦敦。 We walked across the street. 我们穿过了街道。,活学活用 用through 或 across 填空 (1)Go _ the bridge and turn left. (2)The group walked _ the forests. (3)Lin Tao walked _ the hall and went into the library. (4)The
4、 man swam _ the Yangtze River last year.,Section B,across,through,through,across,Section B,3 mind n. 头脑，心智 观察 It is healthy for the mind and the body. 它(锻炼)有益于身心健康。 A good idea came into my mind.我想到了一个好主意。 Would you mind me/my opening the window? 你介意我打开窗户吗？ Not at all. 不介意。,探究 由例句可知mind既可作名词，又可作动词。作
5、名词时，意为“头脑，心智”；作动词时，意为“介意，在乎”，后接动名词形式。,拓展 “Would you mind？ ”意为“你介意吗？”一般用于面对陌生人时或者在非常正式的场合中，表达委婉、客气的意愿。 肯定回答：No, not at all. 不介意，一点儿不介意。/Of course not. 当然不介意。 否定回答：为了使语气委婉，通常不直接用Yes。如： Yes, I do mind. 是的，我很介意。/Better not, please. 请最好不要。,Section B,活学活用 Would you mind _ the TV? Aturn off Bturned off Cto
6、 turn off Dturning off,Section B,解析 D mind后接动词的ing形式。,1 She says its good for my health. 她说它（牛奶）对我的健康有益。 探究 (1)be good for意为“对有好处”，其反义短语是 be bad for。 (2)health 为名词，意为“健康”。通过构词法，它还可以构成一些其他的词。如： health(n.)健康 healthy(adj.) 健康的 healthy(adj.)健康的 unhealthy(adj.)不健康的 healthily(adv.)健康地 unhealthily(adv.)不健康
7、地 常用搭配： keep/stay healthy(be) in good health保持健康。,句型透视,Section B,Section B,辨析 be good for, be good at, be good to与be good with,Section B,活学活用 1单项填空 Doing taijiquan is good _ the old. Afor Bat Cto Dwith,解析 A be good for意为“对有益处”。句意：打太极拳对老年人有好处。,2用health的适当形式完成句子 (1)My grandfather runs every morning to
8、 keep _ (2)She keeps in good _ (3)They live _,healthy,health,healthily,2 Although many students like to watch sports, game shows are the most popular.尽管许多学生喜欢看体育类节目，但是游戏类节目是最受欢迎的。 观察 I didnt pass the exam, although I studied very hard. I studied very hard, but I didnt pass the exam. 尽管我很努力学习了，但还是没有通
9、过考试。,Section B,探究 although为连词，意为“尽管；虽然”，表示转折关系， 同义词是though。 一个句子中，although/though和but只能用 其一。,拓展 类似用法的词还有 because 和so。如： Because I got up late, I didnt catch the early bus.I got up late, so I didnt catch the early bus. 因为我起晚了，所以没有赶上早班车。,Section B,活学活用 2013宁波 Look! Some people are running the red ligh
10、ts. We should wait _ others are breaking the rule. Aif Bunless Calthough Dbecause,答案 C,3 and you can spend time with your friends and family as you play together.当你们一起玩时，你可以和你的朋友、家人一起共度时光。 探究 spend为动词，其过去式是spent，主语通常是人，常用于以下结构：spend time/money on sth 意为“在某事/物上花费时间/金钱”；spend time/money (in) doing sth
11、意为“花费时间/金钱做某事”。如： I spent two hours on this math problem. I spent two hours doing this math problem. 做这道数学题花了我两个小时的时间。,Section B,Section B,辨析 spend, pay, cost与take,活学活用 (1)2013青岛 How much is the ticket to Central Park? A oneway ticket _ $40, and you can _ another $20 for a roundtrip. Acosts; pay Bcost; spend Cpay; spend Dspends; pay (2)2013荆州 It usually _ Mom about half an hour to cook supper. Apays Btakes Cspends Dcosts,Section B,答案 (1)A (2)B,