Unit 21 The weather forecast. 知识点 讲义+练习(含答案)

Unit 21 The weather forecast 天气预报
一、重点单词及拓展:
rain 名词,雨;动词,下雨(普通动词,有时态的变化)
1)不可数名词,雨
例:There will be rain tomorrow. 明天将有雨。
动词,下雨 三单--rains, 现在分词--raining, 过去式--rained
例:It will rain tomorrow. 明天将下雨。
It is raining heavily now. 现在雨下得很大。
rainy形容词,多雨的,阴雨的
例:It is always rainy in Tianjin in July . 在天津,7月份总是多雨。
补充:snow(名词,雪;动词,下雪,和rain 用法相同)
rise和raise的区别
1)rise 不及物动词(vi),后面不能直接接宾语,意思是升起、上升、起床等,过去式为rose。rise也可以做名词使用,表示上涨、提升等意思。
例:The sun rises in the east. 太阳从东方升起。
My parents rise very early. 我父母起床很早。
2)raise及物动词(vt),后可直接接宾语,意思是举起、升起、增加、饲养等,过去式为raised。
例:He raised his voice. 他提高了嗓音。
I can’t raise the box. 我举不起这个箱子。
He is a farmer and raises horses. 他是农民, 同时又养马。
拓展短语:raise one’s hand举起手 raise one’s hat 脱帽致意
raise one’s voice 提高嗓门 raise a family 养家糊口
造句练习1:
昨晚下了一夜的雨。
夏天是个多雨的季节。你要随时准备好雨伞。
当太阳升起的时候,人们会感到温暖。
请先举手,再回答这个问题。
bring 动词,带来;引起;导致 过去式为brought
1)带来,通常指把人或事物带到讲话人或听话人所在之处,对应词为take(拿走)
例:Did you bring my book this time 你这次有把我的书带来吗?
结构:bring+人/物 to...
例:She brought her friend to the party. 她带着朋友来参加聚会。
2)引起;产生;导致
例:War brings death and famine. 战争导致死亡和饥荒。
部分短语:
bring about 引起,实现,导致 bring back 送还,带回
bring in 带来;引进 bring out 取出;拿出 bring up 提出;抚养
fall 动词,下降,落下,倒下,来临;名词,秋天,降落,瀑布
动词,跌倒,倒下,落下,过去式为fell,过去分词为fallen.
例: An apple fell from the tree. 一个苹果从树上落了下来。
Tom fell from his bike last Monday. Tom上周一从他的自行车上摔了下来。
短语:fall down 倒下 fall off 脱落 fall in love with...和......谈恋爱;爱上
动词,表示气温,商品价格的下降
例:The temperature has suddenly fallen. 温度突然下降。
3)fall 还可用作连系动词,意为“变得”,后常接形容词asleep, ill等作表语。
例:She fell ill as soon as she got to London. 她一到伦敦就生病了。
4)名词,秋天(美式英语)=autumn (英式英语)
造句练习2:
下次记得带来你的吉他。
昨天,Tom从楼梯上摔了下来。
昨天夜里我总是难以入眠,所以现在我很困。
补充知识点:
具体时间的表达方式
所有的时间都可以用“小时+分钟”直接读出:
7(7:00) seven 也可以用 seven o’clock 表示 ,o’clock表示整点,可以省略。
6:10 six ten
9: 30 nine thirty
如果所表述的时间在半小时之内,可以用“分钟 + past + 小时”表示“几点多”:
6:10 ten past six
4:20 twenty past four
如果所表述的时间在半小时之内,可以用“(相差的)分钟 + to + (下一)小时”表示“不到几点”:
5:50 ten to six
9:49 eleven to ten
如果所表述的时间恰好为半小时,可以用“half + past + 小时”:
11:30 half past eleven
2:30 half past two
如果所表述的分钟和15有关,就有三种表达法: (15分钟又叫一刻钟:a quarter)
9:15 :nine fifteen ; fifteen past nine ; a quarter past nine
3:45 :three forty-five ; fifteen to four ; a quarter to four
点钟前使用介词at, 表示在…点。
at 8:30 在8点半 at ten o’clock 在10点
到做...的时间了
it is time for sth.
例:It’s time for lunch, please wash your hands. 午饭时间到,洗洗手。
it is time to do sth. (强调动作)
例:It’s time to go to bed, please turn off the light. 该睡觉了,请把灯关了。
复习感官动词look(看起来), sound(听起来), smell(闻起来), taste(尝起来), feel(感到) + 形容词的用法。
语法:现在完成时(一)
定义:表示过去发生或完成的某一动作对现在造成的影响或结果。
结构:
肯定句:主语 + have(has)+ 动词的过去分词
否定句:主语 + have(has)+ not + 动词的过去分词
注:have not = haven’t has not = hasn’t
一般疑问句:Have/Has + 主语 + 动词的过去分词
回答:Yes,主语 + have/has. No, 主语 + haven’t/hasn’t.
标志:常常和以下表示时间的副词连用。
already, 已经,用于肯定句的中间或末尾。
yet, 已经,还,用于疑问句或否定句的末尾。
ever, 曾经,勇于疑问句或肯定句句中。
just, 刚刚,用在句子中间。
例:
We have learned English for 6 years. 我们已经学了6年英语了。
Tom hasn’t finished his homework yet. Tom还没有完成他的作业。
Have you ever watched that game 你有没有看过那场比赛?
How long have you learned English 你学多长时间英语了?
注意:大多动词的过去分词和过去式一样,一些不规则的过去分词要单独记。
专项练习:
用所给词的适当形式填空。
________ he ever _________(visit) the Great Wall
So far, we __________(learn) more than 200 books.
Her sister _____________(live) here for a long time.
My hometown _______________(change) a lot. It’s more beautiful than before.
Last year Tom _________(move) in this city. He ___________ (find) many interesting things here.
单项选择。
--What time is it
--It’s 5:10, we also can say it as _________.
five ten o’clock B. ten past five C. ten to five D. ten five
--What’s wrong with Tom He looks quiet unhappy.
--He _____ from his car and hurt himself last week.
fall B. falls C. fell D. fallen
It is 12:00 now. _______________have lunch. Let’s go together.
It time B. It’s time C. It’s time for D. It’s time to
I can’t _____ this box, it’s too heavy. Can you help me with it
bring B. raise C. rise D. fall
There_____________tomorrow, please remember to take your umbrella.
will have rain B. is going to be rain C. is going to have rain D .is rain
_______you ever ________ the Summer Palace
--Not yet.
Did, visit B. Are, visit C. Have, visited
--Look! Your teacher Miss White is over there.
--No, it can’t be her. She _____ to Beijing.
has gone B. has been C. went D. will go
Sh, please keep quiet. Lucy ______ now. She always falls________quickly.
is sleeping, asleep B. sleeps, asleep
C.sleep, sleepy D. is sleeping, sleepy
9. He looks very ________, so he looks at us ____________.
A. happily, happily B. happy, happy C. happy, happily D. happily, happy
10. --Would you like to try some pizza
--Yes, please. It______ lovely and ______nice.
sounds, sees B. hears, turns C. looks, smells D. sounds, watches
参考答案:
造句练习1:
It rained all night yesterday.
Summer is a rainy season. You should prepare your umbrella at any time.
When the sun rises, people will feel warm.
Please raise your hands, then answer the question.
造句练习2:
Remember to bring your guitar next time.
Tom fell down from the stairs yesterday.
It was difficult for me to fall asleep yesterday, so now I am quite sleepy.
专项练习:
一、1. Has, visited; 2. have learned; 3. has lived 4. has changed 5. moved; has found
二、1-5 BCDBB 6-10. CAACC

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