2023学年完整公开课版Unit4GlobalwarmingGrammar

Unit4GlobalwarmingGrammar性质功能例句代词用作人称代词，代替上文提到的人或事物。

—Whoisit?—It’sme.You’vehelpedmealot;I’llneverforgetit.It的用法及强调句型

性质功能例句代词用以代替指示代词this或that。—What’sthis?—It’sacomputer．—Whosebookisthat?—It'shers．性质功能例句代词表示时间、天气、距离、价钱等。It’stimeforlunch．It’sraininghard．It’stwomilesfromtheschooltoourhome．引导词作形式主语,代替由不定式、动名词或从句等表示的真正主语。Itiseasytobuyanewradio.Itisnousetellinghimthat.Itdoesn’tmatterwhethershecomesornot.

引导词作形式宾语,代替由不定式、动名词或从句等表示的真正宾语。Ifeelitmydutytohelphim.Wethoughtitnousedoingthat.I’vemadeitclearthatnobodyisallowedtosmokehere.引导词表示强调,其结构是:Itis/was+强调部分+that+原句剩余部分。此结构只限于强调状语、主语和宾语。注意：①如果强调的是人,其后用that或who均可;②如果强调的是物、时间或地点等状语,其后只能用that不用where、when、why。引导词IsawTomyesterdayhere.①ItwasIthat/whosawTomyesterdayhere.②ItwasTomthat/whoIsawyesterdayhere.③ItwasyesterdaythatIsawTomhere.④ItwasherethatIsawTomyesterday.引导词注意:

若原句是not…until句型,在强调until部分时,要把否定形式放入被强调部分。例如:Hedidn’tleaveuntillreturned.=ItwasnotuntilIreturnedthatheleft.易与强调句型*若强调谓语,则用do/does/did+动词原形,常译为“的确”“一定”等,该结构只能用于陈述句或祈使句中。引导的强调句与其它从句的区别在于：Dobepatient!(一定要耐心点)HedoeswanttolearnEnglishwell.(他的确想学好英语。)ItwasintheplacethatIwasborn.(强调句)ItwastheplacewhereIwasborn.(定语从句)混淆的其它从句①强调句型中前后时态应一致;②被强调的部分为主语、宾语和状语,若把itis/was和that/who去掉,剩下的词语能重新组成正确的句子,而且不缺成分,否则就是其它从句。Itwasin1945thatWorldWarIIended.(强调句)Itwas1945whenWorldWarIIended.(定语从句)③ItwasalongtimesinceImetyoulast.(时间状语)Itistimethatyouwenttobed.(定语从句)口诀代词it本意它,既可指这又指那;

时间天气均可指,谈到距离也用它;

假主假宾均可做,强调句型跟that。Wasitonalonelyisland______hewassavedonemonthaftertheboatwentdown?A.

where B.that C.whichD.what从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。2.Itisnothowmuchwedobuthowmuchloveweputintowhatwedo______benefitsourworkmost.

who B.which C.that D.what3.Itwasfromonlyafewsuppliesthatshehadboughtinthevillage______thehostesscookedsuchanicedinner.A.

whereB.that C.when D.which4.Itwas______hecamebackfromAfricathatyear______hemetthegirlhewouldliketomarry.A.when;then B.not;untilC.notuntil;that D.only;when5.—I’vereadanotherbookthisweek.—Well,maybe______isnot