九年級(jí)英語(yǔ)第三單元短語(yǔ)整理（新目標(biāo)英語(yǔ)）
九年級(jí)英語(yǔ)unit3
1.語(yǔ)態(tài)：
①英語(yǔ)有兩種語(yǔ)態(tài)：主動(dòng)語(yǔ)態(tài)和補(bǔ)動(dòng)語(yǔ)態(tài)
主動(dòng)語(yǔ)態(tài)表示是動(dòng)作的執(zhí)行者
被動(dòng)語(yǔ)態(tài)表示主語(yǔ)是動(dòng)作的承受者
cats eat fish. （主動(dòng)語(yǔ)態(tài)）貓吃魚(yú)。
fish is eaten by cats. (被動(dòng)語(yǔ)態(tài))魚(yú)被貓吃。
②被動(dòng)語(yǔ)態(tài)的構(gòu)成
由“助動(dòng)詞be ＋及物動(dòng)詞的過(guò)去分詞”構(gòu)成
助動(dòng)詞be 有人稱(chēng)、數(shù)和時(shí)態(tài)的變化，其變化規(guī)則與be 作為連系動(dòng)詞時(shí)完全一樣。
時(shí)態(tài)
被動(dòng)語(yǔ)態(tài)結(jié)構(gòu)
例句
一般現(xiàn)在 時(shí)
am
are +過(guò)去分詞
is
english is spoken in many countries.
一般過(guò)去 時(shí)
was +過(guò)去分詞
were + 過(guò)去分詞
this bridge was built in 1989.
情 態(tài)
動(dòng) 詞
can/should
may +be+過(guò)去分詞
must/……
the work must be done right now.
③被動(dòng)語(yǔ)態(tài)的用法
當(dāng)我們不知道誰(shuí)是動(dòng)作的執(zhí)行者，或者沒(méi)有必要指出誰(shuí)是動(dòng)作的執(zhí)行者，或者只需強(qiáng)調(diào)動(dòng)作的承受者時(shí)，要用被動(dòng)語(yǔ)態(tài)。
2. allow sb. to do sth. 允許某人做某事（主動(dòng)語(yǔ)態(tài)）如：
mother allows me to watch tv every night. 媽媽允許我每晚看電視。
be allowed to do sth. 被允許做某事（被動(dòng)語(yǔ)態(tài)）如：
lily is allowed to go to qinzhou. 莉莉被允許去欽州。
3. get their ears pierced 穿耳洞
讓/使（別人）做某事 get sth. done(過(guò)去分詞)
have sth. done 如：
i get my car made. == i have my car made. 我讓別人修好我的車(chē)
4. enough 足夠
形容詞＋enough 如：beautiful enough 足夠漂亮
enough＋名詞 如：enough food 足夠食物
enough to 足夠…去做… 如：
i have enough money to go to beijing. 我有足夠的錢(qián)去北京。
she is old enough to go to school.她夠大去讀書(shū)了。
5. stop doing sth. 停止做某事 please stop speaking.請(qǐng)停止說(shuō)話。
stop to do sth. 停止下來(lái)去做某事 please stop to speak.
請(qǐng)停下來(lái)說(shuō)話。
6. 看起來(lái)好像…sb. seem to do sth. he seems to feel very sad.
it seems that +從句it seems that he feels very sad. 他看起來(lái)好像很傷心。
7. 系動(dòng)詞不能獨(dú)立作謂語(yǔ)，要和表語(yǔ)一起構(gòu)成謂語(yǔ)。常用的連系動(dòng)詞有：look, feel, be, become, get, turn, smell, taste, stay(保持), kept等。連系動(dòng)詞除be 和become 等少數(shù)詞可接名詞作表語(yǔ)外，一般都是接形容詞。 如：
they are very happy. he became a doctor two years ago.
she felt very tired.
8. 倒裝句:
由so＋助動(dòng)詞(be/do/will/have)/情態(tài)動(dòng)詞＋主語(yǔ) 意為：…也是一樣
she is a student. so am i. 她是一個(gè)學(xué)生，我也是。
she went to school just now. so did i . 她剛才去學(xué)校了，我也是