八年级下册英语第五单元知识点整理.doc

八年级下册英语第五单元知识点整理一,课文重难点讲解: ,you'llhaveagoodtime.   条件状语从句常由从属连词if,unless等引导。和时间状语从句一样,条件状语从句用一般现在时而不用将来时,尤其注意主语为第三人称单数时,动词使用单数形式。if引导的条件状语从句的结构:if+一般现在时,主语+将来时。  Ifyouaskhim,hewillhelpyou.   Ifitrainstomorrow,wewon'tgotothepark.   I'llgowithyouifI'mfree. 'mgoingtowearjeanstotheparty.   Ifyoudo,theteacherwon'tletyouin. (1)do用作代动词,代替上文的动词部分“wearjeanstotheparty”,为避免重复。(2)letin意为“让……进来”     Windowsletinlightandair.     'tletthedogin. ,halftheclasswon'tcome. (1)too“太…”,带否定含义。(2)class此处指全班同学。halfa/an,ahalf,halfthe后接名词,表示“一半”.   Heranhalfamile/ahalfmileinhalfanhour.   Ihavefinishedhalfthebook.   注意表“半个…”或“…个半”时,half一词的用法。  halfanhour半小时,halfayear半年,oneyearandahalf一年半,oneandahalfyears一年半,fiveandhalfdays五天半 .   meet碰头,聚集,见面,watchavideo看录像 .   bebored,getbored疲乏的,厌倦的  bored指人的状态,主语为人“厌乏的”  I'llgetboredifIreadEnglishforalongtime.   TheTVplayistooboring.   I'mnotinterestedinsuchboringstories. ?   Let'shaveittoday.   “tohavetheparty”。 . (1)(2),记得,想起            (3) ',theteacherswilltakeitaway.   bringst