【課件】Unit+3Discovering+Useful+Structures高中英語人教版（2019）選擇性必修第一冊

FascinatingParks動詞-ing形式作主語Haveyoueverseenthesesigns?the–ingformUNIT3語法精講Entrepreneurialactivitiesdiffersubstantiallydependingonthetypeoforganizationandcreativity.Entrepreneurialactivitiesdiffersubstantiallydependingonthetypeoforganizationandcreativity.動詞-ing形式作主語Focuson基本用法the–ingformusedassubject-ing形式作主語動詞-ing形式作主語1.動詞-ing形式作主語，相當于一個名詞,多指抽象、概念性的動作，經(jīng)常性或習慣性行為，主語為單個v-ing時謂語動詞用_______數(shù)。

e.g.1)_________(see)isbelieving.2)_________(read)aloudis

veryimportantforustolearnEnglish.3)_________(play)badmintonismyfavouritesport.

SeeingReadingPlaying單Translatingthefollowingsentences.1.沉迷手機是浪費時間的。Beingaddictedtosmartphones

isawasteoftime.2.爭論此類事情無益。Arguingaboutsuchthings

isnogood.3.參加這個活動是值得的。Takingpartinthisactivity

isworthwhile.1.Beingaddictedtosmartphonesisawasteoftime.2.Arguingaboutsuchthingsisnogood.3.Takingpartinthisactivityisworthwhile.It’sawasteoftimebeingaddictedtosmartphones.It’snogoodarguingaboutsuchthings.It’sworthwhiletakingpartinthisactivity.⑴It'sworth

makingtheeffort.⑵Itispleasant

workingwithyou.⑶It'snouse

cryingoversplitmilk.⑷Itwasawasteoftime

readingthatbook.這件事值得努力去做。和你一起工作很愉快。覆水難收?？茨潜緯抢速M時間。2.

有時為了句子平衡，避免頭重腳輕,用it作形式主語，而把真正的主語(動詞-ing短語)后置。但這種句子形式有一定的限制，作表語的只能是某些形容詞或少數(shù)名詞。形容詞名詞2.有時為了句子平衡，避免頭重腳輕,用it作形式主語，而把真正的主語(動詞-ing短語)后置。常見的固定句型有：Itis/wasawasteoftimedoing…做……是浪費時間的Itis/wasnogooddoing…做……是沒益的Itis/wasnousedoing…做……是無用處的Itis/wasworthdoing…做……是值得的Thereisnosenseindoing…做……沒有道理常見的固定句型有：3.在therebe結構中作主語：這種結構的意思相當于

“Itisimpossibletodo…”。Therebeno動詞ingThereisnohidingofevilbutnottodoit.例：若要人不知,除非己莫為。Thereisnojokingaboutsuchamatter.這種事開不得玩笑。4.動詞-ing形式與不定式做主語的比較

動詞-ing形式通常表示抽象動作；且表示已知的事情或經(jīng)驗。

動詞不定式作主語則表示某次具體動作或行為；且表示未完成的事情或未達成的目的。例1：Doingnothing

isdoingevil．什么也不做就是作惡。例2：It’sanhonorformetobeinvitedtotheparty.我很榮幸被邀請參加這個晚會。1.(take)onthischallenge(will)bringyouinofcontactwithsomeonewhosharesyourinterests.2.(remember)enoughphrasesisnecessaryforstudents.3.(be)amiddleschoollibrarian(be)rewarding.4.(teach)highschoolstudentsinapoorremotevillagemaynotsoundlikefuntoyou.5.It'sawasteoftime(try)topersuadehertochangehermind.6.It'snouse(complain)thattheroofisleaking.7.__________(run)isnotonlybeneficialtoourhealthbutalsofriendlytotheenvironment.8.__________(invite)tothepartyisathewholefamily.9.Not__________(finish)thetaskontimemadehimunhappy.10.(win)thegoldmedalintheOlympicGamesmadeherfamousovernight.Exercise1.

(take)onthischallenge

(will)bringyouinofcontactwithsomeonewhosharesyourinterests.2.

(remember)enoughphrasesisnecessaryforstudents.3.

(be)amiddleschoollibrarian

(be)rewarding.

(sing)ismyhobby,and

(sing)atmyfriend’sbirthdaypartyismydream.5.It'sawasteoftime

(try)topersuadehertochangehermind.TakingwillRememberingBeing

isSingingtosingtrying1.(take)onthischallenge(will)bringyouinofcontactwithsomeonewhosharesyourinterests.2.(remember)enoughphrasesisnecessaryforstudents.3.(be)amiddleschoollibrarian(be)rewarding.4.(teach)highschoolstudentsinapoorremotevillagemaynotsoundlikefuntoyou.5.It'sawasteoftime(try)topersuadehertochangehermind.6.It'snouse(complain)thattheroofisleaking.7.__________(run)isnotonlybeneficialtoourhealthbutalsofriendlytotheenvironment.8.__________(invite)tothepartyisathewholefamily.9.Not__________(finish)thetaskontimemadehimunhappy.10.(win)thegoldmedalintheOlympicGamesmadeherfamousovernight.Exercise6.WatchingTVandreadingbooks__________(have)becomearoutineforme.7.__________(run)isnotonlybeneficialtoourhealthbutalsofriendlytotheenvironment.8.__________(invite)tothepartyisagreathonourforthewholefamily.9.Not__________(finish)thetaskontimemadehimunhappy.10.

(win)thegoldmedalintheOlympicGamesmadeherfamousovernight.haveRunningBeinginvitedfinishingHavingwon語法填空Wehumansareonlybornwithonesetofeyes,soit’sourjobtotakecareof__1__(they)forourwholelives.Thegoodnewsisthatifwedoafewsimple__2__(thing)everyday,wecanprotectoureyesight(視力)andreducetheriskof__3__(hurt)oureyes.Almostalldoctorskeeptellingus__4__(eat)lotsoffreshfruitandvegetablessowecanhavegoodeyesight.Furthermore,weneedtoprotectoureyeswhenwespendlongperiods__5__brightsunlight.Thebestwaytodothisistowearsunglasses__6__have100%UVprotection.Besides,itisimportanttoprotectoureyeswhenweworkwith__7__(danger)chemicals(化學物質).Forthisreasonweshouldalwaysweargoggles(護目鏡)inchemistrylabsatworkoratschool.__8__(final),weshouldnotspendtoomuchtimeinfrontofthecomputerortelevisionscreen.Thatiswhyifwehavetouseacomputerforalongtime,doctorssuggestwetake__9__shortbreakeveryfifteenorthirtyminutes.Havinggoodeyesight__10__(be)important.AsthepopularEnglishexpressiongoes,“It’sallfunandgamesuntilsomeonelosesaneye.”Mymomisavolunteerinapublichospital.Sheservedinnereverydaytothepeoplewaitingfortheirrelativesoutsidehospital.Oneday,she

askedmetoh