九年級(jí)英語(yǔ)第九單元疑難講解及練習(xí)
九年級(jí)英語(yǔ)第九單元疑難地方有哪些呢?接下來(lái)，小編給大家準(zhǔn)備了九年級(jí)英語(yǔ)第九單元疑難講解及練習(xí),歡迎大家參考與借鑒。
九年級(jí)英語(yǔ)第九單元疑難講解及練習(xí)
一、疑點(diǎn)難點(diǎn)
1. It’s used for scooping1 really cold ice cream.它用于舀真得很涼的冰淇淋。
疑點(diǎn)：be used for被用于…，后面加doing，相當(dāng)于be used to do.如：The knife is used for cutting，
難點(diǎn)：be used 后面加不同的介詞構(gòu)成意思不同的短語(yǔ)。be used by被…使用，be used in被用于…場(chǎng)合，be used as被用作…
2. Some leaves from a nearby bush2 fell into the water and remained there for some time.一些樹(shù)葉從附近的灌木上掉進(jìn)了水里，在那里停留了一些時(shí)間。
疑點(diǎn)：1)fall into落入…里面2)some time一段時(shí)間。如：The little boy fell into the river， but at last he got out by himself.
He will go to Beijng sometime3 next Friday and he will stay there for some time.下周五的某個(gè)時(shí)候他要去北京，并且計(jì)劃在那兒呆一段時(shí)間。
難點(diǎn)：1)fall短語(yǔ)有許多，要個(gè)別記憶。如：fall down(從高處)落下，fall off從(自行車(chē)、卡車(chē)、摩托車(chē)等)上面掉下來(lái)，fall over摔趴下
2)注意以下幾個(gè)詞的區(qū)別：some time一段時(shí)間，sometime某時(shí)，sometimes有時(shí)，some times幾次、幾倍
3. Although tea wasn’t brought to the Western world until 1610，this beverage4 was discovered over three thousand years before that.盡管茶到1610年才傳到西方，但這種飲料在那之前三千年就已經(jīng)被發(fā)現(xiàn)了。
疑點(diǎn)：hundred,thousand,million等詞和具體數(shù)字連用時(shí)，本身只能用單數(shù)形式;沒(méi)有具體數(shù)字修飾和of 構(gòu)成短語(yǔ)時(shí)要用復(fù)數(shù)形式。如：Millions of ants poured into the kitchen.
Two million ants poured into the kitchen.
難點(diǎn)：句中的although是連詞，意為“雖然、盡管”，引導(dǎo)讓步狀語(yǔ)從句，相當(dāng)于though，但比though正式，多用于正式文體，二者均不能和but連用，但可以和yet連用。
4. The customer was happy in the end.顧客最終很高興。
疑點(diǎn)：in the end=at last=finally最后、最終。如：They talked and talked for a long time， in the end they all felt quite tired.
難點(diǎn)：相關(guān)短語(yǔ)：at the end of在…的最后、在…的末尾;by the end of到…末為止
二、重點(diǎn)講解
1. The potato chips were invented by mistakes.土豆條被誤打誤撞地發(fā)明了。
by mistake錯(cuò)誤地;make mistakes犯錯(cuò)誤、出錯(cuò);mistake…for把…錯(cuò)當(dāng)成
如：Li Lei took my umbrella by mistake.
Lily made few mistakes in the English exam.
We often mistake the twins for each other.
2. Did you know the tea，the most popular drink in the world，was invented by accident?你知道茶——世界上最受歡迎的飲料是被偶然發(fā)現(xiàn)的嗎?
by accident=by chance=accidentally偶然的、無(wú)意中。如：Cathy met his classmate on the way to the shop by accident.
3.…this beverage was discovered over three thousand years before that.
discover與find的區(qū)別：
find指尋找的結(jié)果即“發(fā)現(xiàn)、找到”。如：The girl was looking for her wallet， at last she found it under her desk.
discover表示“偶然或經(jīng)過(guò)努力發(fā)現(xiàn)客觀存在的事物、真理或錯(cuò)誤”。
如：Columbus discovered America in 1492.哥倫布于1492年發(fā)現(xiàn)了美洲。
4. According5 to an ancient Chinese legend，……按照中國(guó)古老的傳說(shuō)……
according to 依照、按照、根據(jù)
如：According to what he said，we know he was interested in pop music.根據(jù)他所說(shuō)的，我們知道他喜歡流行音樂(lè)。
三、語(yǔ)法展示
被動(dòng)語(yǔ)態(tài)
I、被動(dòng)語(yǔ)態(tài)的構(gòu)成形式be+Vt.p.p.
(一).語(yǔ)態(tài)是英語(yǔ)動(dòng)詞的一種形式，是用于表示主語(yǔ)和謂語(yǔ)之間的關(guān)系的。英語(yǔ)語(yǔ)態(tài)分為主動(dòng)語(yǔ)態(tài)(active voice)和被動(dòng)語(yǔ)態(tài)(passive voice)兩種。
主動(dòng)語(yǔ)態(tài)是表示主語(yǔ)是動(dòng)作的執(zhí)行者。如：1)Yesterday I parked my car outside the school.
被動(dòng)語(yǔ)態(tài)是表示主語(yǔ)是動(dòng)作的承受者。2)A sound of piano is heard in the hall.
(二).被動(dòng)語(yǔ)態(tài)的基本時(shí)態(tài)變化
在被動(dòng)語(yǔ)態(tài)的句子中，謂語(yǔ)部分的結(jié)構(gòu)是be + Vtp.p.(及物動(dòng)詞過(guò)去分詞)。其中be是變量，隨時(shí)態(tài)的變化而變化;動(dòng)詞的過(guò)去分詞是常量，永遠(yuǎn)不發(fā)生變化。當(dāng)然，這只是指謂語(yǔ)部分而言。be動(dòng)詞作為一個(gè)獨(dú)立的謂語(yǔ)動(dòng)詞有自己現(xiàn)在分詞(being)和過(guò)去分詞 (been)。那么，下面我們來(lái)看看be在各種時(shí)態(tài)中的變化形式：
被動(dòng)語(yǔ)態(tài)通常為八種時(shí)態(tài)的被動(dòng)形式。以do為例，各種時(shí)態(tài)的被動(dòng)語(yǔ)態(tài)形式為：
1)am/is/are +done (過(guò)去分詞)一般現(xiàn)在時(shí)
2)has /have been done 現(xiàn)在完成時(shí)
3)am/is /are being done 現(xiàn)在進(jìn)行時(shí)
4)was/were done一般過(guò)去時(shí)
5)had been done過(guò)去完成時(shí)
6)was/were being done過(guò)去進(jìn)行時(shí)
7)shall/will be done一般將來(lái)時(shí)
8)should/would be done過(guò)去將來(lái)時(shí)
我們可看看下面的實(shí)例：
English is spoken in many countries all over the world .(一般現(xiàn)在時(shí))世界上許多國(guó)家都講英文。
Some TV sets for sale in the department store were stolen last night.(一般過(guò)去時(shí))那家商場(chǎng)用來(lái)出售的部分電視機(jī)昨晚被盜。
He won’t be allowed，by his father，to marry Larra.(一般將來(lái)時(shí))他父親不會(huì)讓他娶拉拉為妻的。
They would be sent to the army when they finished the training.(過(guò)去將來(lái)時(shí))他們結(jié)束訓(xùn)練時(shí)將被派往部隊(duì)。
The project is being carried out.(現(xiàn)在進(jìn)行時(shí))這個(gè)計(jì)劃正在執(zhí)行中。
The case was being investigated6 then.(過(guò)去進(jìn)行時(shí))那時(shí)這案子正在調(diào)查中。
This novel has been translated into several languages. (現(xiàn)在完成時(shí))這本小說(shuō)已被譯成了幾種語(yǔ)言。
They said that production costs had been reduced.(過(guò)去完成時(shí))他們說(shuō)生產(chǎn)成本已經(jīng)下降了。
II、一般來(lái)說(shuō)，在我們?nèi)粘Ｉ钪校苡弥鲃?dòng)語(yǔ)態(tài)的時(shí)候就盡量不去用被動(dòng)語(yǔ)態(tài)。只有在下列情況中我們才用被動(dòng)語(yǔ)態(tài)：
英語(yǔ)里被動(dòng)語(yǔ)態(tài)的使用似乎比漢語(yǔ)要廣泛。英語(yǔ)的被動(dòng)語(yǔ)態(tài)常用在下列的場(chǎng)合：1)當(dāng)我們不知道動(dòng)作的執(zhí)行者的時(shí)候，如：1、Look!There’s nothing here. Everything has been taken away.
2、My car has been moved!
2)當(dāng)我們不必提出動(dòng)作的執(zhí)行者的時(shí)候，如：I was born in 1960.
3)當(dāng)我們強(qiáng)調(diào)或側(cè)重動(dòng)作的承受者的時(shí)候，如：She is liked by everybody.
III、特殊的被動(dòng)結(jié)構(gòu)
1)帶情態(tài)動(dòng)詞的被動(dòng)結(jié)構(gòu)：它的固定句式為“情態(tài)動(dòng)詞+be+過(guò)去分詞”。也有個(gè)別帶to的情態(tài)動(dòng)詞例外，如：ought to和have to，它們的被動(dòng)結(jié)構(gòu)就只能在不定式中。例如：The debt7 must be paid off before next month.那筆債務(wù)必須在下個(gè)月前付清。
The debt has to be paid off before next month.那筆債務(wù)必須在下個(gè)月前付清。
2)帶有兩個(gè)賓語(yǔ)的主動(dòng)語(yǔ)態(tài)變成被動(dòng)語(yǔ)態(tài)
將這種主動(dòng)態(tài)的句子變成被動(dòng)態(tài)的句子，可選兩個(gè)賓語(yǔ)中的任何一個(gè)作為被動(dòng)態(tài)句子的主語(yǔ)，而將另一個(gè)賓語(yǔ)作為“保留賓語(yǔ)”寫(xiě)入被動(dòng)態(tài)的句中。但有一點(diǎn)要說(shuō)明，那就是，如果你選直接賓語(yǔ)作“主語(yǔ)”，有時(shí)要在被動(dòng)態(tài)句子的“保留賓語(yǔ)”前加上合適的介詞。因?yàn)檫@些動(dòng)詞常有兩種句式，即：我們可以說(shuō)give sb. sth.，send sb. sth.，buy sb. sth;我們也可以說(shuō)give sth to sb，send sth to sb，buy sth for sb。請(qǐng)看下面兩種情況的對(duì)照：
She sent me a novel on my birthday.
I was sent a novel on my birthday.
A novel was sent to me on my birthday.
3)關(guān)于帶有復(fù)合賓語(yǔ)的主動(dòng)態(tài)變成被動(dòng)態(tài)
如果將帶有復(fù)合賓語(yǔ)(既：賓語(yǔ)+賓語(yǔ)補(bǔ)足語(yǔ))的主動(dòng)語(yǔ)態(tài)的句子變成被動(dòng)語(yǔ)態(tài)的句子，我們只能選擇原來(lái)句子的賓語(yǔ)作被動(dòng)語(yǔ)態(tài)句子的主語(yǔ);而這時(shí)，原句里的賓語(yǔ)補(bǔ)足語(yǔ)現(xiàn)在就變成被動(dòng)語(yǔ)態(tài)句子的“主語(yǔ)補(bǔ)足語(yǔ)”了。
The story made us laugh .(賓語(yǔ)補(bǔ)足語(yǔ))
We were made to laugh by the story.(主語(yǔ)補(bǔ)足語(yǔ))
4)在使役動(dòng)詞have，make，get以及感官動(dòng)詞see，watch，notice，hear，feel，observe等后面不定式作賓語(yǔ)補(bǔ)語(yǔ)時(shí)，在主動(dòng)結(jié)構(gòu)中不定式to要省略，但變?yōu)楸粍?dòng)結(jié)構(gòu)時(shí)，要加to。
Someone saw a stranger walk into the building.
A stranger was seen to walk intothe building.
有些相當(dāng)于及物動(dòng)詞的動(dòng)詞詞組，如“動(dòng)詞+介詞”，“動(dòng)詞+副詞”等，也可以用于被動(dòng)結(jié)構(gòu)，但要把它們看作一個(gè)整體，不能分開(kāi)。其中的介詞或副詞也不能省略。例The meeting is to be put off till Friday.
6)非謂語(yǔ)動(dòng)詞的被動(dòng)語(yǔ)態(tài)。v.+ing形式及不定式to do也有被動(dòng)語(yǔ)態(tài)(一般時(shí)態(tài)和完成時(shí)態(tài))。例I don’t like being laughed at in the public. There are two more trees to be planted.
7)It is said that+從句及其他類(lèi)似句型。
一些表示“據(jù)說(shuō)”或“相信”的動(dòng)詞如believe，consider，expect，report，say，suppose，think等可以用于句型“It+be+過(guò)去分詞+that從句”或“主語(yǔ)+be+過(guò)去分詞+to do sth.”。如：It is said that…據(jù)說(shuō)，It is reported that…據(jù)報(bào)道，It is believed that…大家相信，It is hoped that…大家希望，It is well known8 that…眾所周知，It is thought that…大家認(rèn)為，It is suggested that…據(jù)建議。
It is said that the boy has passed the national exam.=The boy is said to have passed the national exam.
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九年級(jí)英語(yǔ)第九單元疑難講解及練習(xí)
