Unit 4 Save the trees 语法讲义+语法练习+单元综合检测（无答案）

7B Unit4 Save the trees语法讲义
Grammar：现在进行时?构成：be?(am,?is,?are)?+?动词的现在分词形式1）Be动词的用法口诀?:?我用am，你用are，is连着他，她，它；??单数名词用is，复数名词全用are。??变疑问，往前提，句末问号莫丢弃。??变否定，更容易，be后not莫忘记。??疑问否定任你变，句首大写莫迟疑。小试牛刀：用be动词适当的词填空。 ?1.?I?________?from?Australia.? 2.?She?_______??a?student.? 3.Jane?and?Tom?_________?my?friends.? 4.?My?parents?_______??very?busy?every?day.? 5.I?______?an?English?teacher?now.? 6.Where??_________??you?from?? 7.The?light??_________??green.? 8.My?name?_________??Li?Dong.I?_________?twelve.? 9._________?they?your?new?friends?? 10.?I?______?a?boy.?______?you?a?boy??No,?I?_____?not.? 11.?The?girl______?Jack's?sister.?15.?The?dog?_______?tall?and?fat.? 12.?______?your?brother?in?the?classroom?? 13.?Where?_____?your?mother??She?______?at?home.? 14.?Whose?dress?______?this??19.That?______?my?red?skirt.?20.Who?______?I?? 15.?Some?tea?______?in?the?glass.? 16.Gao?shan's?shirt?_______?over?there.? 17.?My?sister's?name?______Nancy.? 18.?This?______?not?Wang?Fang's?pencil.? 19.?______?David?and?Helen?from?England?? 20.?We?____?friends.? 21.?She?___?a?teacher.? 22.?I?___?a?girl.? 23.?Many?ants?____?in?my?house. 24.His?mother?____?fat.2）现在分词的构成：??直：直接加ing,?如：work---working??去：以不发音的e结尾的词，去e加ing,?如：make---making??双：以重读闭音节结尾的词，需双写末尾辅音字母加ing。如：sit---sitting????改：以ie结尾的词，改ie?为y,?加ing。如：die---dying;?tie---tying;?lie---lyingExercises：?写出下列动词的现在分词?play________? run________????? swim?______??? make_______???? go_________?? like______?? write______???? ski__________?? read_______???? ?have_______? sing?_______ dance_______??? put_______?? see________????? buy?________?? live_________ take_________?? come?________???? get_______???????? stop________ 二．用法1.表示现在正在进行的动作?? He?is?doing?his?homework?now.?他现在正在做作业。????2.强调这段时间一直在进行的动作?? I?am?learning?to?swim?these?days.?这些天我一直在学游泳。1）易错考点（特殊用法）：?? 瞬间性动词如go,?come,?arrive,?die等瞬间性动词用现在进行时表将来 The?bus?is?leaving.?公交车快开了。?? 现在进行时与always,?forever,?all?the?time这种词连用时，动作不一定正在进行，而是表达说话人强烈感彩，如批评，表扬，同情等。 He?is?always?helping?others.?他总是帮助别人。（带有表扬的感彩）2）标志词：?? 时间类：now;?at?present;?these?days;?right?now;?at?the?moment;?.....???? 情景类：listen;?look;?...??3)不能用进行时态的动词?：?表状态、感觉、情绪、精神活动的动词不可用于进行时，?如：believe（相信），doubt（怀疑），hear，know，understand，belong（属于），think（认为），look（看起 来），show，mind，have，sound（听起来），taste（尝起来），care，like，hate，love......?感官动词? The?cake?tastes?delicious.?这个蛋糕很美味。?误：The?cake?is?tasting?delicious.?? 2.?表示拥有或需要的动词?? I?want?to?have?a?rest.?我想要休息一下。??误：I?am?wanting?to?have?a?rest.??? 3.?表示喜好或厌恶的动词?? I?like?to?go?for?a?trip.?我想去旅游。??误：I?am?liking?to?go?for?a?trip.??? 4.?表示知道或了解的动词?? I?know?what?he?meant.?我知道他的意思。??误：I?am?knowing?what?he?meant.??? 5.?表示存在状态的动词?? I?exist?by?what?I?think.?我靠所思考的东西而生存。??误：I?am?existing?by?what?I?think.?小试牛刀：用所给的动词的正确形式填空：?The?boy?__________________?(?draw)a?picture?now.? 2.?Listen?.Some?girls?_______________?(?sing)in?the?classroom?.? 3.?My?mother?_________________?(?cook?)some?nice?food??now.? 4.?What?_____?you?______?(?do?)?now?? 5.?Where?is?your?mother?? ??She?________________________?(answer)?the?phone.? 6.?They?____________(not?,water)?the?flowers?now.? 7.?Look!?The?girls?________________(dance?)in?the?classroom?.? 8.?What?is?our?granddaughter?doing??She?_________(listen?)?to?music.? 9.?The?teachers?________________?(run)?now.? 10.______Helen____________(wash?)clothes???Yes?,she?is?.三．现在进行时的句式变化：be动词的变化? ）否定句：be后面加not?如：I?am?not?talking?to?you.? 2）一般疑问句：be?+主语+doing+其它。如：?Are?you?talking?to?me？? 3）特殊疑问句：疑问词+一般疑问句。?Who?are?you?talking?to？小试牛刀：按要求改写句子The?boy?is drawing?a?picture?now.?否定句： 一般疑问句： 特殊疑问句：?Listen?！Some?girls?are singing in?the?classroom?.?否定句： 一般疑问句： 特殊疑问句：?Listen?！Some?girls?are singing in?the?classroom?.?特殊疑问句：单元综合检测：I．词汇：根据汉语或首字母提示写单词，补全句子。（共10小题，每小题0.5分）? ?In?a?forest,?people?can?have?more?________(氧气)?to?breathe.? 2.?Let's_____________?(讨论)the?importance?of?trees. 3.?The?__________(气体)?from?the?paper?factory?smells?very?bad. ?4.?There?are?a?lot?of?________?(家具)?in?the?house.? ?Let’s?help?save?this?small?tree.?It?has?got?a?_________(疾病).? 6.?The?p_______?trees?are?always?green?around?the?year.? 7.?Some?forests?are?in?danger.?So?people?are?trying?to?s_______?them. ?8.?To?have?a?better?living?environment,?we?must?fight?a?________?pollution.? ?We?can't?i_______?a?world?without?animals?or?trees. ?Look!?The?girl?is?putting?a?tree?in?a?h_________?to?plant?it. ? II．句子：根据汉语提示，补全句子。每空一词。 11.大多数水果来自树木。? Most?of?the?fruits________?________trees.? 12.那个男孩正在四处张望。?That?boy_______?______?______.? 13.实际上，多年以前这个地方被树覆盖着。? ______?______,?this?place?was?covered?with?trees?many?years?ago.? 14.尽管这座轿是木制的，但它依然很牢固。? Though?this?bridge______?______?______?wood,?it's?still?very?strong 15．那些村民们正尽力地保护着那个小森林。? Those?villagers?are?________?_______?_______?to?protect?that?small?forest.? III．单项选择。（共15小题，每小题1分）? A)从下面每小题的A、B、C、D四个选项中选出可以替代划线部分的最佳选项。? (? ?)?16.?As?students,?our?major?task?(任务)?is?to?study?hard. A.?busy?????????????????????B.?great? C.?interesting?????? D.?important? (?? )?17.?Trees?can?produce?lots?of?useful?things?for?us. A.?make??????????????????B.?find? C.?buy???????????????????????D.?watch? (? ?)?18.?Computers?and?mobile?phones?make?our?lives?more?convenient.? A.?easier???????????????????B.?richer? C.?more?exciting?????????D.?more?interesting? (?? )?19.?The?children?are?discussing?what?to?do?to?help?animals. A.?listening?to??? ??B.?looking?at? C.?thinking?of????????????D.?talking?about? (?? )?20.?The?tall?mountains?are?covered?with?millions?of?trees.? A.?several?????????????????B.?a?few? C.?a?lot????????????????????????D.?so?many? B)从下面每小题的A、B、C、D四个选项中选出可以填入空白处的最佳选项。 (?? )?21.?-?How?do?trees?help?us??Do?you?know?? ???????-?For_______?example,?they?can?keep?air?cool?_______clean.? A.?an;?but?????????????????B.?an;?and? C.?/;?but?????????????????D.?/;?and???????????? (?? )?22.?-?I'd?like?________?something?about?trees.?Can?you?tell?me??-?Sure.?They?can?help?________?in?many?ways. A.?to?know;?we??????????B.?to?know;?us? C.?know;?we? D.?know;?us? (? ?)?23.?-?Why?do?trees?have?very?long?roots?? ????????-?Because?the?roots?take___________?enough?water?for?them_________.? A.?in;?living?????????????????B.?in;?to?live? C.?out;?living???????????????D.?out;?to?live? (?? )?24.?-?______?do?we?have?to?save?trees?? ????????-?Because?they?are?______birds?and?animals. A.?Why;?home?to?????????? B.?Why;?the?home?to??????C.?How:?home?to?????????? D.?How;?the?home?to? (?? )?25.?-?This?kind?of?new?car?can?produce?little?______?gases?and?it?is?cheap.??????? ?-?Sounds?good.?I'll?think?about?when?______?it.?????? A.?useful;?buying???????B.?useful;?to?buy??????C.?harmful;?buying?????D.?harmful;?to?buy? (?? )?26.?-?Wow!?There_______?a?lot?of?new?desks?in?the?house.? ????????-?Yeah.?And?they?smell_______?because?they?are?wooden?(木制的).? ?A.?is;?nice??????????????????B.?is;?nicely? C.?are;?nice????????????????D.?are;?nicely? (? ?)?27.?-?I?think?drinking?too?much?cola?is?________health.???????? ?-?I?agree.?So?what?kind?of?drink?can?keep?us?________.?????? A.?good?for,?health??????B.?bad?for;?health??????C.?good?for;?healthy????D.?bad?for;?healthy (?? )?28.?-?Look!?The?old?woman?___________?a?big?bag.?She?must?be?tired.???????? ?-?I?think?so.?Let's?provide?her?_________?some?help.?????? A.?carries;?for???????????B.?carries,?with? C.?is?carrying;?for?????????D.?is?carrying;?with? (?? )?29.?-?What?a?nice?hill!?There?are?_________trees?on?it.??????? ?-?That's?because?people?have?never?stopped?________?here.????? ?thousand?of;?planting?????????B.?thousand?of;?to?plant????? C.?thousands?of;?planting???D.?thousands?of;?to?plant (?? )?30.?-?Look!?The?farmers________?down?trees?now.?????? ???-?___________.?Why?not?stop?them?doing?that??????? A.?cut;?Sounds?great???????? B.?cut;?I'm?not?sure? C.?are?cutting;?It?doesn't?matter????? ?D.?are?cutting;?That's?too?bad?IV．完形填空。（10分）?阅读下面短文，从短文后每小题的四个选项中选出能填入相应空白处的最佳选项。（共?10小题，每小题1分）? A?little?boy?loved?to?play?around?a?tall?apple?tree?every?day.?Later,?when?he?grew?up,?he?no?longer?played?there.? One?day,?the?boy?came?and?he?looked?__31__.?When?the?tree?knew?the?boy?wanted?some?toys,?she?asked ?the?boy?to?pick?all?her__32__?to?sell.?So?the?boy?did?it?and?left.? ??????Another?day,?the?boy?turned?into?a?man?and?got?back,?"Come?and?play?with?__33__!"?the?tree?was?excited?and?said.?"__34__,?I?have?to?build?a?house?to?live?in,"?the?man?said.?"You?can?__35__?off?my?branches?to? build?your?house."?So?the?man?did?it?and?left?__36__. ?????One?hot?summer?day,?the?man?came.?When?the?apple?tree?knew?that?the?man?needed?a?boat?to?go?sailing,?she?let?him?__37__?her?trunk(树干)．? ?????After?many?years,?the?man?came?again.?"Sorry,?my?boy.?But?the?__38__?thing?left?is?my?dying?roots,"?the?tree?said.?"I?just?need?a?place?to?rest?__39__?I'm?old?and?tired?after?all?these?years,"?the?man?said.???“Come!? __40__?tree?roots?are?the?best?place?to?rest,"?the?man?sat?down?and?the?tree?smiled?with?tears. (?? )?31.?A.?glad?????????? ?B.?sad???? ?C.?excited???????? ?D.?tired? (?? )?32.?A.?roots?????????? ?B.?leaves??? C.?apples???????? ?D.?Branches (?? )?33.?A.?me?????????? B.?you??? C.?him??????? D.?her? (?? )?34.?A.?Yes????????? B.?OK?????? ?C.?Great??? D.?No? (? ?)?35.?A.?take????????? B.?cut??????? C.?get???????? D.?fall??? (?? )?36.?A.?slowly??????? B.?easily??? C.?sadly??????? D.?Happily (?? )?37.?A.?bring???? B.?take???? C.?carry???? ? D.?Catch (? ?)?38.?A.?first???????? ?B.?only????? C.?good???? D.?bad? (?? )?39.?A.?so??????? B.?but????? C.?though??????? D.?because? (?? )?40.?A.?Old????????? B.?New???? C.?Long??? D.?Short? V.?阅读理解。（10分）? ????阅读下面短文，从每小题的四个选项中选出最佳选项。（共5小题，每小题2分）? Trees?are?important?and?they?can?help?us?in?many?ways.?However,?some?of?them?are?in?danger?and?need? to?be?taken?care?of?as?much?as?possible.?There?are?some?ways?to?save?trees.? ???Use?paper?wisely.?We?can?save?trees?by?using?paper?in?a?right?way.?What?can?we?do??Use?both?sides?of? paper?when?doing?homework.?Borrow?books?to?read?when?you?needn't?buy?them.?Never?throw?old?books? away,?but?be?kind?to?donate?them?to?others?who?need?them.?In?place?of?paper?towels,?use?cloth?towels.? ??Plant?trees.?To?save?trees,?it's?a?great?idea?to?plant?them.?Spring?is?the?best?season?to?plant?trees.?If?everyone around?us?does?it,?millions?of?trees?will.?appear?and?make?our?world?become?green?and?beautiful.? ??????Tell?people?to?understand?the?importance?of?trees?and?help?save?trees,?Try?to?write?letters?to?government?official?(官员)?and?persuade?(劝)?them?to?use?as?little?paper?as?they?can.? (?? )?41.?How?many?ways?are?there?to?use?paper?wisely?????? ?A.?Two,???????????????????B.?Three.? C.?Four.???????????????????D.?Five.? (? ?)?42.?What?can?we?do?if?we?want?to?save?trees??????? A.?Plant?trees. B.?Stop?using?towels. C.?Work?with?the?government.??????D.?Never?do?any?homework.? (?? )?43.?What?does?the?underlined?word?"donate"?mean'??????? A.?lead???????B.?sell????? C.?throw?? D.?give? (?? )?44.?Which?of?the?following?is?TRUE???????? ?All?trees?on?the?Earth?are?in?danger.??????B.?Trees?can?make?our?world?beautiful.?????? C.?To?save?trees,?never?buy?books.?????? D.?Most?people?can't?understand?trees.? (?? )?45.?The?passage?mainly?wants?to?tell?us_________.?????? A.?why?to?save?trees????????????B.?how?to?save?trees?????? C.?where?to?find?trees??????D.?when?to?plant?trees VI．用所给单词的适当形式完成句子。（共10小题，每小题1分）? ?What?a?tall?tree!?It?has?long?________?(branch)?and?thick?leaves.? ?In?big?cities,?air?________?(pollute)?is?becoming?worse?than?before.? ?We?use?trees?to?do?a?lot?of?useful?things?in?our_______?(life).? 49.?He?left?without?_________?(say)?any?words.? 50.?Trees?can?provide?better?places?for?animals?and?birds?______?(live)?in.? 51.?Trees?are?like?_______?(fight).?They?can?keep?air?cool?and?clean.? 52.?Look!?The?boys?are?_______?(lie)?on?the?beach?and?enjoying?the?sun.? 53.?The?phone?is?______?(ring).?Please?answer?it?now.? 54.?It's?a?fine?day?________?about?______?(dig)?holes?by?the?lake?to?plant?trees???? 55.?You?can?improve?(提高)?your?English?by?_________(join)?an?English?club.???????? VII．书面表达。（15分）? ????请你根据下面的内容提示，以The?uses?of?trees为题，写一篇关于树的用途的文章。60词以上，可以适当发挥。（开头已经给出，不计入总词数） 提示：? 树可以为我们提供很多有用的东西，如水果，药品，木材等；? 2．树为人类提供氧气，净化空气，美化环境，有利于生态环境的保护；? 3．树可以为动物和鸟类提供家园和足够的食物，保持生态平衡(the?balance?of?nature)；? 4．树能够、防止水土流失和减少土地变成沙漠?(desert)。????????????????????????????????? The?uses?of?trees For?humans,?trees?have?a?lot?of?uses._________________________________________________? _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ I.?(One?possible?version)?? 1.?oxygen??2.?discuss??3.?gas??????4.?furniture???5.?disease??6.?pine????7.?save?????8.?against???9.?imagine???10.?hole??II.?(One?possible?version)?? 11.?come?from???12.?is?looking?around??13.?In?fact??14.?is?made?of??15.?doing?their?best??III.?16-20?DAADD??21-25?DBBAD??26-30?CDDCD???IV.?31-35?BCADB??36-40?DBBDA?V.?41-45?CADBB??VI.?(One?possible?version)? 46.?branches??47.?pollution??48.?lives????49.?saying???50.?to?live???51.?fighters???52.?lying?????53.?ringing??54.?digging??55.?joining???VII.?(One?possible?version)? The?uses?of?trees?? ??For?humans,?trees?have?a?lot?of?uses.?Trees?can?provide?us?with?many?things,?such?as?fruit,?medicine?and?wood.?Trees?can?produce?oxygen?for?people?to?breathe,?keep?air?cool?and?clean.?We?can?make?our?environment?better?by?protecting?trees.?Trees?are?home?to?animals?and?birds?and?provide?them?with?enough?food.?Trees?can?help?keep?the?balance?of?nature.?Trees?can?stop?earth?moving?away?with?water?and?make?less?land?become?a?desert.?We?can’t?imagine?a?world?without?trees. 【书面表达写作指导】? ????本次书面表达要求写关于树的用途的文章。写作时要注意以下几点： 1.?确定时态，应使用一般现在时进行写作；? 2.?书写正文时，要围绕文字提示展开内容，不能遗漏要点；?3.?注意正确使用情态动词can；? 4.?文章完成之后，要通读全文，检查语法是否正确、要点是否齐全。