1、第24课时Unit 8【考点精讲】一、核心词汇1allow vt考点点拨 allow作动词,意为“允许”。(not) allow sb. to do sth. sbis(nt) allowed to do sth(不)允许某人做某事。如:This school doesnt allow students to use mobile phones.这所学校不允许学生使用手机。He is not allowed to stay out late.他不允许晚归。allow doing sth.允许做某事。如:We dont allow smoking in the room我们不允许有人在房间里抽烟
2、。2depend vi考点点拨 depend意为“依靠,依赖,指望”,一般不用于进行时。它是不及物动词,不能直接跟宾语。跟宾语时要加介词on或upon,主要用法如下:depend后面跟名词或代词,即:depend on/upon sb. /sth依靠指望某人某物。如:We depended on ourselves and overcame all difficulties.我们依靠自己的力量克服了所有的困难。后面跟带不定式的复合结构,即:depend on/upon sb. to dosth,意为“指望某人做某事”,可转换为depend on one(s) doing sth.。如:You
3、cant depend on them to do it.You cant depend on their/them doing it.你不能指望他们做这件事。3harm vt考点点拨 harm用作及物动词时,意为“伤害,损害,对有害处”。如:I have never harmed anybody.我从未伤害过任何人。Doctors say smoking harms our health医生说吸烟有害健康。harm还可以用作不可数名词,意为“危害,害处”。harmful形容词,意为“有害的”;harmless形容词,意为“无害的,不会导致损伤的”;do harm to be harmful
4、to对有害。如:The drought did a lot of harm to the crops.干旱使庄稼遭到很大损害。It is harmful to your health to drink too much过量喝酒对你的健康有害。4. living adj考点点拨 living作形容词,意为“活着的,活的”,指长久存在,活力经久不衰,可用于人也可用于物,还可用于比喻。living在句中作定语时,既可前置也可后置。引申可作“现存的;在使用中的;逼真的;生动的”解。如:living things生物;living animals活着的动物The giraffe is the talle
5、st of all living animals.长颈鹿是所有现存动物中最高的。living作形容词时,没有比较级或最高级。living还可以用作可数名词,意为“生活,生计”。指的是一种谋生的具体方式或手段,常和冠词a连用。What do you do for a living?你以什么谋生?He left his office job to try to make a living on the land.他辞去了办公室的工作,设法以务农为生。二、核心句型1. We can save energy by turning off the lights when we leave a room.
6、当我们离开房间时,我们可以通过关掉灯来节能。考点点拨 turn off关掉(电源开关、水龙头、液化气闸阀等)。当宾语用名词表示时,可以放在turn off中间,也可以放在turn off之后;当宾语用代词表示时,只能放在turn off中间。类似用法的短语有:turn on打开(电源开关、水龙头、液化气闸阀等),turn up调大调高调亮,turn down调小调低调暗。如:Do you mind if I turn off the light?我把灯关掉你介意吗?Why is the light still on? Please turn it off.灯为什么还开着?请把它关掉。2. Fo
7、r example, we are not allowed to cut down trees.例如,我们不允许砍树。考点点拨 cut down砍倒,通常指砍倒树木。宾语用名词表示时可以放在中间,也可以放后面;宾语用代词表示时只能放在中间。如:These trees are so beautiful. We wont cut them down.这些树这么美,我们不会砍倒它们。3. Remember that everyone can do something to make a difference!记住每个人都能做一些事情让世界有所不同!考点点拨 make a difference (to
8、 sb./sth)(对某人某物)有影响起作用创造不同。如:One honest man can make a difference.一个老实人可能产生影响。Does his absence make a difference to your work?他的缺席会影响你的工作吗?make no difference (to sb/sth)(对某人某物)没作用没影响无关紧要。如:Flowers make no difference to this room这个房间里有没有花都没什么区别。三、重点语法一般将来时的被动语态在被动语态中,当动作还没有发生时,需要用一般将来时的被动语态结构。1一般将来时被
9、动语态的肯定句的构成:(以动词help为例)The new film will be shown next Thursday.这部新电影将在下周四上映。2一般将来时被动语态的否定句的构成:在助动词will或be going to中的be动词后面加not(可缩写)。The meeting wont be held tomorrow.会议明天不会召开。3一般将来时被动语态的一般疑问句的构成:将助动词will或be going to中的be动词移至句首,其他作相应变化。当主语是第一人称时,助动词will也可以用shall。肯定回答用“Yes,主语+will.”或“Yes,主语+am/ is/are”
10、。否定回答用“No,主语+wont.”或“No,主语+am not isnt/arent”。如:- Will the work be finished at once?这项工作会立刻被完成吗?- Yes, it will.No, it wont.是的,立刻就完成。不,不会。4一般将来时被动语态的特殊疑问句的构成:特殊疑问词+一般疑问句?对主语提问时句子结构为:特殊疑问词+will be/be going to be+过去分词?当主语是第一人称时,助动词will也可以用shall。如:When will these books be published?这些书将在什么时候被出版?Who will
11、 be invited to our party?谁将会被邀请参加我们的聚会?【考点精练】一、单项选择( )1. (2014南京)Were sure that the environment in our city_ greatly through our work in the near future. A improved B. was improved C has improved D. will be improved( )2. (2014成都)Mum wants to watch the CCTV news. Lets _ the TV. Aturn down B turn on C
12、 turn off( )3. (2014重庆)The little girl was crying because her mother didnt allow her _ the ice cream. A eat Beats C to eat D. ate( )4. (2014遂宁)We are planning to go for a picnic this weekend, but it _ the weather. A keeps on Bputs on C depends on( )5. (2014无锡)A little wine will not be_ to your healt
13、h. Just dont drink too much. Ahelpful B helpless C harmful D harmless二、用所给单词的适当形式填空1. It makes no_ (different) to me whether you go or not.2. That man makes a_ (live) by writing.3. (2014盐城)Next week a speech on art _ (give) by an artist in our school.三、根据汉语提示完成句子1(2014广州)为了进一步美化校园,下个月会在学校种很多树。Next m
14、onth many trees_ in our school to make it more beautiful.2那棵苹果树枯死了,所以他把它砍掉了。The apple tree was dead, so he_.3在我的城市里,空气污染要比中国其他城市少。There is_ in my city than that in other cities in China.参考答案一、15 DBCCC二、1. difference 2. living 3. will/is going to be given三、1. will/are ging to be planted 2. cut it down 3. less air pollution
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