寒假预习单元知识梳理巩固练习Unit4四年级英语下人教PEP(含答案)

寒假预习单元知识梳理+巩固练习Unit4Atthefarm重点单词：tomato西红柿potato马铃薯；土豆carrot胡萝卜horse马cow母牛；奶牛sheep羊；绵羊hen母鸡these(this的复数形式)这些goat山羊yum(表示味道或气味非常好)eat吃animal兽；动物farm农场those(that的复数形式)那些

garden花园；菜园重点短语：greenbeans豆角；四季豆trysome尝一点儿alotof许多lookat看……howmany多少havealook看一看vegetablegarden菜园overthere在那边eatcarrots吃胡萝卜onthefarm在农场重点句型：1.—Arethesecows?—Yes,theyare.—这些是奶牛吗?—是的。2.—Arethosetomatoes?—No,theyaren't.Theyarepotatoes.—那些是西红柿吗?—不,不是。它们是土豆。3.—Whatarethese?—They'rehens.—这些是什么?—它们是母鸡。4.—Whatarethose?—They'repigs.—那些是什么?—它们是猪。5.—Aretheysheep?—No,theyaren't.They'reducks.—它们是绵羊吗?—不,不是。它们是鸭子。6.—Whatarethose?—They’rehorses.—那些是什么？—它们是马。7.—Arethesecarrots?—Yes,theyare.—这些是胡萝卜吗？—是的，它们是。8.—Whatarethese?—They'retomatoes.—这些是什么？—它们是西红柿。9.They'resobig!它们是如此的大!10.Lookatthegreenbeans.看这些豆角。Youhavealotofanimals.你有许多动物。句型解析：1.（1）.—Whatarethese?—Theyaretomatoes.—这些是什么？—它们是西红柿。（2）.—Whatarethose?—They’rehorses.—那些是什么？—它们是马。解析:以上两个问句都是由what引导的特殊疑问句，用于询问近处或远处复数事物的名称。these（这些）指近处的事物，those（那些）指远处的事物，二者均用于指代复数名词。答语用They作主语。句型结构如下：—Whatarethese/those?—They’re+可数名词复数.易错点提示：these/those是this/that的复数形式，后面的be动词用are，these/those后面只跟可数名词复数形式。例句：—Whatarethese?—Theyarepotatoes.—这些是什么？—它们是土豆。（2）—Whatarethose?—Theyaregreenbeans.—那些是什么？—它们是豆角。（1）—Arethesecarrots?—Yes,theyare.—这些是胡萝卜吗？—是的。（2）—Aretheyhens?—No,theyaren’t.Theyareducks.—它们是母鸡吗？—不，不是。它们是鸭子。解析:问句都是由be动词are引导的一般疑问句，用于确认近处或远处事物的名称。答语用they作主语。句型结构如下：—Arethese/those/they+可数名词复数?肯定回答：—Yes,theyare.否定回答：—No,theyaren’t.（+Theyare+可数名词复数.）例句：—Arethesehorses?—Yes,theyare.—这些是马吗？—是的。（2）—Aretheysheep?—No,theyaren’t.Theyaregoats.—它们是绵羊吗？—不，不是。它们是山羊。—Howmanyhorsesdoyouhave?—Seventeen.—你有多少匹马？—十七匹。解析:问句是由howmany引导的特殊疑问句。howmany意为“多少”，后面接可数名词复数，答句可用基数词简答。do为助动词，帮助构成疑问句，没有实际含义。句型结构如下：—Howmany+可数名词复数+doyouhave?—基数词.4.关于名词的复数：在英语中，名词可分为可数名词和不可数名词。可数名词有单数和复数两种形式。可数名词变复数有规律可循，具体如下：情况构词方法例词一般情况在词尾加shorse—horses以s,sh,ch,x结尾的词在词尾加esbox—boxes以o结尾的词在词尾加s或esphoto—photostomato—tomatoes以辅音字母加y结尾的词变y为i，再加esstory—stories以f或fe结尾的词变f或fe为v，再加esleaf—leaves单复数同形的词sheep;fish;deer;Chinese巩固练习：一、选出下面每组单词中画线部分发音不同的一项。orseB.forkC.worldornB.homeworkC.work()3.A.girlB.birdC.sisterorkB.wordC.nurse()5.A.doctorB.worldC.work()6.A.forkB.worldC.born()7.A.homeworkB.morningC.horse()8.A.overB.workC.those()9.A.potatoB.tomatoC.hot二、用所给单词的正确形式填空。1.—Whatare________(this)?—Theyareapples.2.—Isthisan________(apple)?—Yes,itis.3.Look!They'reyellow.They________(be)good.4.—Arethese________(carrot)?—Yes,theyare.5.Lookatthe________(tomato).They'rered.6.There________(be)aredtomatoinmyhand.7.________(them)aredogs.8.Howmany________(greenbean)doyouhave?9.MrWang________(have)abigfarm.10.Iseea________(horse)andtwo________(cow)inthepicture.三、单项选择。()1.—Howmany________arethere?—Twentyone.A.potatoesB.potatoC.banana()2.—Arethesehorses?—________They'regoats.A.Yes,theyare.B.No,theyaren't.C.Yes,itis.()3.Therabbitslikeeating________.A.tomatoB.onionC.carrots()4.Eggsarefrom________.A.goatB.sheepC.hens()5.—________arethose?—They'reapples.A.HowB.WhatC.What's()6.—________—Theyarehorses.A.What'sthat?B.Whatarethese?C.Aretheyhorses()7.—Arethosehens?—________A.Yes,theyare.B.Yes,itis.C.Yes,weare.()8.—Howmanyducksdoyouhave?—________A.I'mfive.B.Iseefive.C.Ihavefive.()9.—Whatarethey?—________A.No,theyaren't.B.Theyarehens.C.It'sahen.()10.—Howmanycowsdoyouhave?—________A.Onehundred.B.Theyarefat.C.I'm10.()11.—Arethosehorses?—________A.Yes,theseare.B.Yes,theyare.C.No,itisn't.()12.________lovetoeatcarrots.A.ThedogB.Acat