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Unit10Ifyougototheparty,you’llhaveagreattime!1．if引导的条件状语从句if连词表示假设或条件，如果„的话(1)句子时态：主句一般将来时、含情态动词或祈使句，从句一般现在时。（主将从现、主祈从现）If+句子（一般现在时），+主句（主语will/may/can+动词）IfIhaveenoughmoneynextyear,Iwillgototravel.1fitdoesn’traintomorrow,I’llgobikingridingwithyou.Ifyoufinishyourhome,youcanwatchTV.Pleaseletmeknowifhecomestothiscity.(2)主句部分只能使用will的一般将来时，不能使用begoingto的结构.(3)if引导条件状语从句和宾语从句的区别if引导条件状语从句，如果，主句要用一般将来时；if引导宾语从句，是否=whether,主句时态要根据语境确定Idon’tknowifhewillcomeheretomorrow.(是否)Ifhecomes,I’llcallyou.（如果）Idon'tknowifitwillraintomorrow.我不知道明天是否会下雨。(4)与其他句式之间的句型转换：A.祈使句+and/or+一般将来时的句子Ifyoudon’tworkhard,you’llfailtheexam.=Workhard,andyou’llpasstheexam.=Workhard,oryou’llfailtheexam.B.借助介词with或without来转换条件状语从句：Peoplecan’tlivewithoutairorwater.=Ifthereisnoairorwater,peoplecan’tlive(Peoplewilldie).Ifyouhelpme,I’llfinishtheworkontime.Withyourhelp,I’llfinishtheworkontime.Ifyoudon’thelpme,Iwon’tfinishtheworkontime.=Withoutyourhelp,Iwon’tfinishtheworkontime.2.Ithink…句型,是一个含有宾语从句的主从复合句，我认为，我想从句用陈述语序。宾语从句里如果有否定含义，往往把否定词由从句移到主句，这叫否定前移。Idon’tthinkI’mgoingtostayathome.我想我明天不会呆在家里。3.(1)halfadj.一半的，半个的。(2)一半的…half+n.或Halfofn.其谓语动词取决于后面的名词或代词的形式。Half(of)theclasswon‟tcome.有一半的学生一会来。4.unless除非，如果不用于引导条件状语从句。Unlessyoustudyhard,youwon’tgotocollege除非你努力学习,否则你考不上大学。5.(1)beafraidtodosth害怕做某事Iamafraid_______(speak)inEnglish.(2)beafraidofsth/sb害怕某人或物Mysisterisafraidofdogs.(3)I’mafraid+从句我恐怕…I’mafraidIcan’tgowithyou.6.“特殊疑问词+动词不定式”Idon’tknowwhattodo.做什么Idon’tknowhowtolearnmath.怎么学数学Idon’tknowwhentogotoschool.什么时间去上学Idon’tknowwheretogoshopping.去哪里购物7.too…to…太…而不能…too+adj+to+do可与not…enoughtodosth和so…that…互换Heistooyoungtogotoschool.=Heisnotoldenoughtogotoschool.=Heissoyoungthathecan’tgotoschool.8.advice不可数n.建议劝告。表示数量要用piece等词来修饰。apieceof/some/muchadvice.9.情态动词should用法：should用来提出建议和忠告，(1)should+动词原形(2)否定句：shouldnot+动词原形(3)疑问句：should+主语+动词原形+其他ShouldIhelphim？10.反身代词oneself—myself/yourself/himself/herself/ourselves/themselveskeep…tooneself保守秘密helponeselfto...随便吃，不客气enjoyoneself玩的开心teachoneself=learn...byoneself自学11.angry生气的beangryat/aboutsth因某事而生气beangrywithsb.对某人生气