資源簡介

(共11張PPT)
重點詞匯講解
Unit4 Weather and our lives
教師______
學校______
重點詞匯
search v. 搜索；搜尋；搜查；查找
They searched the area for hours but couldn't find the missing dog.
他們搜 索該地區數小時但未能找到失蹤的狗。
【提示】search與 search for的區別：
search通常指搜索的行為或過程，它強調的是動作本身，后面可以直接跟地點等，表示在其中進行搜索。search for則明確表示尋找某個特定的目標或對象，側重于搜索的目的和意圖，后面通常跟要尋找的人或事物。也可以將search與search for的用法合并在一個句子中，既強調搜查的地點，又表達尋找的對象。如：
The police searched the building.
警方搜查了這座建筑。(這句話說明警方在建筑里進行了搜索，但未具體說明他們要找的是什么。)
The police searched for the suspect.
警方搜尋了嫌疑人。(這句話說明警方正在尋找特定的人，即嫌疑人。)
I searched my bag for my keys.
我翻了我的包找鑰匙。(這句話明確了在找什么—鑰匙，以及在哪里找—包里。)
drop v. 降低；減少
The temperature dropped to zero during the night.
氣溫在夜間降到了零度。
At last the wind droppe d. 風勢終于減弱了。
【提示】drop常用于表示“(意外地)落下，掉下，使落下”之意。
如：
He dropped his mobile phone in the pool and it broke.
他不小心把手機掉進了游泳池，手機壞了。
The balloon dropped to the ground when the air leaked out.
當氣球漏氣時， 它落到了地上。
【聯想】rise v.(數量)增加，增長，提高
wind n.風
The wind is blowing from the south.刮的是南風。
【聯想】windy adj.多風的；風大的
a windy day 大風天
cloud n.云；云朵
The Sun went behind a cloud.太陽躲在了一朵云的后面。
【聯想】cloudy adj.被云遮住的；陰云密布的；多云的
a grey,cloudy day 灰暗多云的一天
fog n. 霧
The fog finally disappeared.霧終于散了。
【聯想】foggy adj. 有霧的
Word study
The children are looking forward to the picnic next Saturday.
孩子們期待著下周六的野餐。
【提示】picnic也可作動詞，其過去式和過去分詞均為picnicked, 表示“野 餐”,相當于have a picnic。如 ：
They picnicked on the grass near the lake.
他們在湖邊的草地上野餐。
have a picnic 野餐
【提示】have在這里是“進行”之意。“去野餐”通常說成 go for a picnic。如：
Let's have a picnic by the lake this weekend.
讓我們這個周末在湖邊野餐吧。
Let's go for a picnic this weekend at the park.
這周末我們去公園野餐吧。
picnic n. 野餐
hate v. 討厭；憎惡
【提示】hate后常跟名詞、動名詞或動詞不定式，表示“討厭某事或討厭做某事”。
I hate Monday mornings.我討厭星期一早上。
She hates making mistakes.她討厭出錯。
He hated to be away from his family.他很不愿意離開家。
【聯想】like v.喜歡；喜愛 love v.喜歡；愛
record n. 紀錄；記錄 v. 記 錄
She holds the world record for the 100 metres. 她保持著100米的世界紀錄 。(作名詞，意為“紀錄”)
Last summer was the wettest on record in this city.這個城市去年夏天的降雨量是有記錄以來最大的。(作名詞，意為“記錄；記載”)
You should record all your expenses during your trip.你應該記下你旅行中的所有開支。(作動詞，意為“記錄；做記錄”)
break a record 打破紀錄
She broke a record by running the marathon in under 2 hours and 30 minutes. 她以不到2小時30分鐘的成績跑完了馬拉松，打破了紀錄。
It's a well-known fact that smoking is harmful to your health.吸煙對你的健康有害，這是一個眾所周知的事實。
in fact 事實上
【提示】in fact是一個副詞短語，用來引入一個真實的情況、事實或提供進一步的信息來支持一個聲明或觀點。如：
In fact, I think we should stay here for another day. 事實上，我覺得我們應該在這里多待一天。
I thought she wouldn't come,but in fact, she arrived early. 我以為她不會來，但事實上，她來得很早。
fact n. 現實；實際情況
increase v. 增長；增加
The population has increased from 1.2 million to 1.8 million.人口已從120 萬增加到了180萬。
【聯想】decrease v.(使大小、數量等)減少，減小，降低
介詞by在這里用于表示數量或程度。又如：
House prices went up by 10%.房價上漲了10%。
the late 1700s 18世紀末
【提示】“世紀”有兩種主要的表達方式：
使用“序數詞+century” 使用數字
在17世紀初 in the early 17th century in the early 1600s(讀作in the early sixteen hundreds)
在18世紀中葉 in the mid 18th century in the mid 1700s(讀作in the mid seventeen hundreds)
在19世紀末 in the late nineteenth century in the late 1800s(讀作in the late eighteen hundreds)
在21世紀 in the 21st century in the 2000s(讀作in the twenty hundreds)
see you again(共25張PPT)
語法單元
Unit4 Weather and our lives
教師______
學校______
it的用法
1.人稱代詞it用法
2.非人稱代詞it
3.常用it固定句型
4.總結與練習
it可用來指代前文提到的人,物或事情,也可以用來指時間,金錢,距離,天氣等自然現象
一、it 做代詞:
1. it作人稱代詞
⑴. 指前文提到的事物，以避免重復:
Shantou is a beautiful city, isn’t it
⑵. 指不明性別的嬰兒或不明身份的人:
Look，that’s a baby! It looks like a doll.
Is this your wallet No, it isn’t.
⑶.代替指示代詞this/that
There is a cat on the desk. It looks like a hat.
Who is knocking at the door It must be Bill.
指代時間、天氣、距離、溫度等。
a) It is 5 o'clock. (指時間)
b) It is raining. (指天氣)
　 It is cold. 天氣冷。
c) It is 10 miles to the city. (指距離)
指代時間、天氣、距離、溫度等
2. it作非人稱代詞
二、it 做引導詞
·I find it hard to learn gymnastics.
我發現學體操很難。
·I feel it necessary to learn every day.
我覺得每天學習很有必要。
·I made it a rule to keep a diary every day.
我定下一個規矩,每天寫日記。
·I believe it no use reading without understanding.
我認為只讀書不理解沒用。
2.作形式賓語
結構：
主語+ 動詞+(形式賓語)it+(賓語補足語)形容詞或名詞+(真正賓語)不定式或動名詞或賓語從句。
It is important to learn a foreign language. 學習一門外語是很重要的。
重要句型：
it takes sb. some time to do sth. 完成某事需要某人花費多少時間
It takes me an hour to finish my homework every day.我每天完成作業需要一個小時。
2. 形式主語（真正的主語是后面的不定式）
三、it固定句型
1.It is + 名詞 + to do sth.
It is my pleasure to help you.
It is a good idea to do exercise every morning.
抽象名詞
2.It is + 形容詞 + to do sth.
It is hard to finish the work on time.
It is easy to work out this problem.
It is+形容詞+for/of sb.+to do sth.
形容詞修飾“事”用for
形容詞修飾“人”用of
it is kind of you to help me.
it is important for you to work out the problem.
對于某人來說
3.It is time(for sb.)for sth./to do sth.
It is time for class.
It is time for you to give a talk.
4.It takes sb. some time to do sth.
It takes him 20 minutes to drive to the office every day.
5.It is + the 序數詞+ time that...
It is the first time that I have been to Shanghai.
6.It is said/reported /believed that...
It is said that he is rich.
It is believed that the prices will be rising.
物價
7.It is no good (use) doing sth.
It is no good learning English without speaking English.
It’s no use trying to argue with him.
動名詞作主語
總結與練習
1.Was it during the Second World War
______ he died
A. that B. while
C. in which D. then
2.Is ______ necessary to complete the
design before National Day
A. this B. that
C. it D. he
3. I don’t think _______possible to
master a foreign language without
much memory.
A. this B. that
C. its D. it
4.Does ____matter if he can’t finish
the job on time
A. this B. that
C. he D. it
5. The Parkers bought a new house but ______ will need a lot of work before they can move in.
A. they B. it
C. one D. which
6. In fact _______ is a hard job for the police to keep order in an important football match.
A. this B. that
C. there D. it
7. Tom’s mother kept telling him that he
should work harder, but ______ didn’t help.
A. he B. which
C. she D. it
8. ______ is a fact that English is being accepted as an international language.
A. There B. This
C. That D. It
他來飯店的時候，已經是12點50分了。
It was already 12:50 when he got to the restaurant.
照顧孤兒是他的職責。
It was his duty to take care of the orphans.
修車花了我一百美元。
It took me 100dollars to repair the car.
看樣子她得了重感冒。
It seemed/ appeared that she has caught a bad cold.
9. 完成下列漢譯英的練習。
To have a good knowledge of history is very helpful for all of us.
It is very helpful for all of us to have a good knowledge of history.
To learn a foreign language is very useful for a scientist.
It is very useful for a scientist to learn a foreign language.
To finish this work in three hours is necessary.
It is necessary to finish this work in three hours.
To sit by the fire with a book in winter is very comfortable.
It is very comfortable to sit by the fire with a book in winter.
To guess where they are is difficult for me.
It is difficult for me to guess where they are.
To see you staying in bed all the time makes me feel sad.
It makes me feel sad to see you staying in bed all the time.
10. 用it作形式主語，改下下列句子。
see you again

展開更多......

收起↑