Review：定语从句Review：1.Theymaygiveperformancesinpubsorclubs,forwhichtheyarepaidincash.2.Themusicianweretoplayjokesoneachotheraswellasplaymusic,mostofwhichwasbasedlooseluontheBeatles.3.Afterayearorsoinwhichthebecamemoreseriousabouttheirwork....4.Haveyoueverdreamedofplayinginfrontofthousandsofpeopleataconcert,atwhicheveryoneisclappingandappreciatingyourmusic?5.Theymaystartasagroupofhihg-schoolstudents,forwhompractisingtheirmusicinsomeone'shouseisthefirststeptofame.“介词＋关系代词”引导的定语从句1.引导定语从句的类型eg.Thevalleyinwhichthetownliesisverybeautiful.Thisisthehotel,inwhichtheystayed.2.关系代词的确定关系代词+which关系代词+whomeg.Doyouknowthegirltowhomourteacheristalking?theschoolinwhichmyfriendoncestudiedisveryfamous.3.介词的选取四原则：“一先、二动、三形容、四意义”（1）根据定语从句中先行词（往往为表时间、地点、原因、方式等的词）与介词所形成的习惯搭配；eg.Doyoustillrememberthedayonwhichwemetwemetforthefirsttime?Thereisashopinwhichwecangetsomefreefood.Doyoustillrembemerthedaysduringwhichweworkedtogether?大家应该也有点累了，稍作休息（2）根据定语从句中谓语动词与介词形成的固定搭配；eg.Isthisthecarforwhichyoupaidahighprice?ThisistheipadonwhichIspent3,000yuan.Inthedarkstreet,therewas'tasinglepersontowhomshecouldturnforhelp.(3)根据与定语从句中的形容词与介词所形成的固定搭配；eg.Theonlyonethingofwhichhewasnotsureisthegirl'strueidentity.Hewasgenerouswithhistime,forwhichIwasgrateful.(4)根据句子的意思来确定介词。eg.Thisismycar,withoutwhichIcannotgetthere.Thisisthepilotwithwhommybrotherhasworkedfortenyears.Theyareagroupofpeopleforwhomprotectingwildlifeiseverything.注意：不是所有与动词形成固定搭配的介词都可提至关系代词前面,常见的此类短语有：lookfor,listento,lookafter,takecareof,lookat,takepartin,makeuseof,lookforwardto等；eg.这就是我正在寻找的手表。Thisisthewatchwhich/thatIamlookingfor.Thisisthewatchforwhich/thatIamlooking.2.（“介词+关系代词”前面或后面可有some,any,none,both,all,neither,most,each,few,three,several等代词或数词，此时介词常用of.eg.Heloveshisparentsdeeply,bothofwhomareverykindtohim.Therearefortystudentsinourclass,mostofwhomarefromHenanprovince.（3）way做先行词，后接定语从句时，若从句引导词在定从中做状语，则引导词用inwhich/that/不填；当引导词在从句中做宾语、主语等时，引导词用which/t