17.We _____ about 1,600English words since we began to learn the language.( 。
A.learnB.learnedC.will learnD.have learned

分析 自從我開始學習這門語言以來,我已經(jīng)學了大約1600個英語單詞.

解答 答案:D
根據(jù)since we began to learn the language,可知應該用現(xiàn)在完成時態(tài).since we began to learn the language是現(xiàn)在完成時的標志詞.現(xiàn)在完成時態(tài)表示過去發(fā)生或已經(jīng)完成的動作對現(xiàn)在造成的影響或結(jié)果.或從過去已經(jīng)開始,持續(xù)到現(xiàn)在的動作或狀態(tài).本題屬于從過去已經(jīng)開始,持續(xù)到現(xiàn)在的動作或狀態(tài),現(xiàn)在完成時態(tài)的構(gòu)成:助動詞have/has+過去分詞,故選:D.

點評 本題主要考查動詞時態(tài),做此類題目要注意時間狀語、標志詞.根據(jù)上下文所表達的含義,做出判斷.同時更應記清時態(tài)的構(gòu)成形式.就本題而言,主要考查現(xiàn)在完成時態(tài).

練習冊系列答案
相關習題

科目:初中英語 來源: 題型:閱讀理解

15.What opinions did experts have about movement and transportation throughout history?Take a look
 Lord Kelvin,a famous scientist,1800s
Opinion:Airplanes would never fly.
Was he right?No.On December 17,1903,the Wright brothers made the first controlled flight in a powered airplane.
 Lee DeForest,a pioneer in radio,TV,and radar,1900s
    Opinion:No person would ever reach the moon.
    Was he right?No.On July 20,1969,Neil Armstrong stepped onto the moon. 
 Leonardo da Vinci,artist,scientist,inventor,1400s
Opinion:People would fly in a machine with an overhead propeller.
Was he right?Yes.This artist's sketch,made about 1490,shows a helicopter 400 years before its invention.
 Jules Verne,science fiction writer,in an 1870 novel
Opinion:People would be able to travel under water in airtight ships.
Was he right?Yes.Though submarines already existed,it would be decades before they could stay submerged for long-distance travel.
31.Which of the following experts was a science fiction writer?D
A.Lord Kelvin.
B.Lee DeForest.
C.Leonardo da Vinci.
D.Jules Verne.
32.Lee DeForest's opinion was thatB.
A.a(chǎn)irplanes would never fly
B.no person would ever reach the moon
C.people would fly in a machine with an overhead propeller
D.people would be able to travel under water in airtight ships
33.How many experts'opinions proved right according to the passage?B
A.One.
B.Two.
C.Three.
D.Four.

查看答案和解析>>

科目:初中英語 來源: 題型:選擇題

8.I have been to many parks,and Disneyland is ________ one.(  )
A.interestingB.more interesting
C.most interestingD.the most interesting

查看答案和解析>>

科目:初中英語 來源: 題型:選擇題

5.The students didn't stop talking _____ the teacher came in.( 。
A.beforeB.untilC.whenD.because

查看答案和解析>>

科目:初中英語 來源: 題型:填空題

12.我認為臨陣磨槍,最后突擊復習不會取得好效果.
Idon't think starting preparations only at the last moment will bring good results.

查看答案和解析>>

科目:初中英語 來源: 題型:填空題

2.我們想告訴老師,不要阻止我們嘗試我們的新想法.  We want totell the teacher not to stop us (from) trying out our new ideas.

查看答案和解析>>

科目:初中英語 來源: 題型:選擇題

9.Tommy is made ________ from the computer before getting his work done.( 。
A.stayingB.to stayC.staying awayD.to stay away

查看答案和解析>>

科目:初中英語 來源: 題型:完形填空

2.  On April 20th,a big earthquake happened in Ya'an,Sichuan.Many buildings were (36)A.Many people lost their relatives and their homes.A lot of people were injured,about 200 people died.All the Chinese people felt very sad.But,(37)B,love is around us.Thousands of soldiers arrived there as quickly as they could.Many people gave them a hand.Lots of people volunteered to help them.Some raised money for them,some bought something for them,some went there (38)D the sad children up.
   I'm deeply moved by these people.As a middle school student,what I can do is (39)A my pocket money to the quake-stricken area.I have also made some beautiful cards with some encouraging words (40)C help to cheer up the kids who are of the same age as we are.I'm sure no difficulty will beat us!

36.A.destroyedB.discoveredC.fallenD.found
37.A.fortunateB.fortunatelyC.unluckilyD.lucky
38.A.cheerB.to cheer upC.to cheering upD.to cheer
39.A.to donateB.donateC.to be given awayD.give away
40.A.in order thatB.so thatC.in order toD.such that.

查看答案和解析>>

科目:初中英語 來源: 題型:選擇題

3.Our class teacher has a strict rule.He says that all the students______ come to class on time.( 。
A.needB.canC.mayD.must

查看答案和解析>>

同步練習冊答案