thatit/thoseone/ones的区别1)one,ones,that,those2)that只用于替换表示事物的名词，而one/ones替换表示人和表示事物的名词皆可。3)that/those用于替换有定冠词的名词；one/ones用于替换有不定冠词的名词。eg:IboughtadictionarythreeyearsagoandIamstillusing______now.IboughtadictionarythreeyearsagobutIamgoingtobuyanew_______soon.itthat/thoseone/ones的区别：that替换单数可数名词或不可数名词，one只替换单数的可数名词that只用于替换表示事物的名词，而one/ones替换表示人和表示事物的名词皆可。that/those用于替换有定冠词的名词；one/ones用于替换有不定冠词的名词。it指特定的前面提到过的事物，即：it和它替换的是同一个事物，it前无修饰语；而one用于替换与前提事物有共同之处但并不完全一样的事物，因此，one之前或之后一定有修饰语来加以区别。1.TheParkersboughtanewhousebut_____willneedalotofworkbeforetheycanmovein.(NMET2001,25)2.Iamlookingforahouse.I’dlike____withabrook(小溪)around_____.3Iammovingtothecountrysidebecausetheairthereismuchfresherthan__________inthecity.一、Itis/was+被强调部分是物+that+剩余的部分被强调部分是人+who/whom/that+剩余的部分注意(被强调部分是:主语，宾语，表语或状语)①ItwasIwho(that)metTominthestreetyesterday.②ItwasTomthatImetinthestreetyesterday.③ItwasinthestreetthatImetTomyesterday.④ItwasyesterdaythatImetTominthestreet.强调句的连接词一般只用that；强调人时，可用who(主语)或whom(宾语).强调句的句型一般为“Itwas/is+强调部分+that+其余部分”强调时间,地点,原因状语时,不能使用when,where,why来代替that三强调主语时，谓语动词应与之保持一致。巩固练习：1.Itwas___hesaid____disappointedme.A.what;thatB.that;thatC.what;whatD.that;what2.Isitinthefactory_____thistypeofcarsareproduced?A.whichB.whereC.thatD./3.Isitthefactory______thistypeofcarsareproduced?A.whichB.whereC.thatD./4._____onMondaynightthatallthishappened?A.IsitB.ItisC.WasitD.Itwas5.Itwas_____theoldworkercamethatwe_____theexperiment.A.until;didn’tbeginB.notuntil;beganC.untilbeganD.notuntil;didn’tbegin6.ItisI____singinginthegarden.A.whoareB.whoamC.thatareD.thatis把下列句子改为强调结构:1Themeetingwillnotbeginuntileveryoneisseated.2Theysaidhonestyisthebestofallthevirtues.关于it的一些固定句型补充完整下列句子:1It____________________towalktoschooleveryday.每天我走路去学校花了20分钟的时间.2_______________thathestudiedabroadwhenhewasyoung.据说他年轻时在外国留学3Itis_______________(cry)overthespiltmilk.覆水难收.4Itis______________thatI_____________theGreatWall.这是我第一次参观长城.5_____________________sheissoan