【題目】So far scientists have done a lot of research on Mars successfully.（改為被動語態(tài)）

So far a lot of research on Mars ________ ________ done successfully by scientists.

【答案】has been

【解析】

本句的受動著（賓語）是a lot of research on Mars，改為被動語態(tài)的主語；本句的謂語動詞是“have done”現(xiàn)在完成時，改為被動語態(tài)為has/have been done，被動語態(tài)的主語a lot of research on Mars是第三人稱單數(shù)，可知使用has；其他部分照抄，by+主動語態(tài)的主語（by scientists）放在句子的末尾。故答案為（1）has (2) been。

練習冊系列答案
相關(guān)習題

科目：初中英語 來源： 題型：

【題目】We________ basketball on the playground when it began to rain.

A.playB.will playC.were playingD.are playing

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】The things I ordered online ________ yesterday.

A.were deliveredB.are deliveredC.deliveredD.delivers

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】根據(jù)對話內(nèi)容, 從方框內(nèi)的選項中選出能填入空白處的最佳選項。選項中有兩項為多余選項。

A: Nice to meet you! I’m Dave from America.

B: Nice to meet you, too! I’m He Wei, an exchange student from China.

A: China? It’s a great country. 【1】.

B: Really? Well, next year, you can come to my house for the New Year.

A: OK. 【2】.

B: Of course not. On the New Year’s Eve, we always make dumplings with family and some coins are put in the dumplings. 【3】.

A: That’s cool .Anything else?

B: On the New Year’s Day, we Chinese always visit relatives and give gifts to each other.

A: Oh, I like gifts. 【4】.

B: In China, you shouldn’t open the gift at once. You should wait and open it later.

A: Really? It’s interesting. 【5】.

B: You’re welcome.

A.Thank you for telling me so much.

B.Do you often get a lot of gifts?

C.The person with coins is lucky.

D.I’m interested in Chinese festivals, especially the Chinese New Year.

E.When I get a gift, could I open it at once?

F.Do you like coins?

G.Would you mind telling me some customs about the festival?

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】 Last year, we took a trip to New York City. When we arrived at our _______ , it was around 2 a.m. My son, Joseph, looked out at the lights of Times Square and said he wanted to go _______ . I told _______ it was too late to go out, but he kept looking out of the window and said, "Just for two minutes."

My wife and I looked at each other, smiled and said, "Two minutes." We got dressed and walked to the center of Times Squares. _______ we got there, my son pointed _______ the lights and said, "Dad, look!" We enjoyed the colourful lights of Times Squares. After a while, he felt sleepy. So we had to go back to the hotel.

It took us 20 minutes to _______ for the 20 seconds we spent outside, but it made our son _______ and that meant a lot to us. That night, I learned a _______ about happiness. We sometimes have chances to _______ happy moments in our lives, but we often find an excuse to do something else.

Because of my son, I learned that I am the biggest enemy to my own happiness. ________ happiness is a door that is always open, we are the ones who have to decide if we are going to walk through the door.

【1】A.bankB.hotelC.restaurantD.supermarket

【2】A.backB.homeC.insideD.outside

【3】A.himB.herC.meD.us

【4】A.IfB.UntilC.WhenD.Because

【5】A.outB.inC.withD.at

【6】A.do sportsB.get readyC.make rulesD.have dinner

【7】A.happyB.sadC.boredD.patient

【8】A.symbolB.wayC.lessonD.plan

【9】A.avoidB.wasteC.forgetD.create

【10】A.As soon asB.AlthoughC.AfterD.And

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】— ________.

— Good luck.

A.I will go to Germany with my parents this summer holiday.

B.I won the first prize in the chemistry competition last week.

C.I am going to have an interview in that company this afternoon.

D.I fell off the bicycle and hurt my leg on my way home yesterday.

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】“What kind of stories have you read these years?” Bob asked me. (改為賓語從句)

Bob asked me ________ kind of stories I ________ read these years.

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】聽一段材料，回答下面幾個小 題。

【1】What is Peter doing?

A.He is interviewing Jenny.

B.He is having an English class.

C.He is giving advice.

【2】How many animals has Jenny got?

A.Three.B.Five.C.Seven

【3】What do we know from Jenny’s talking?

A.She’s busy at home every day.

B.She loves animals and looks after them well.

C.Her parents don’t allow her to have pets.

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】

A.Buy gifts for friendsB.Take lots of photos

C.Stay in the hotel.D.Talk with local people.

查看答案和解析>>

同步練習冊答案