新概念英语第一册Lesson143PPT

Lesson143AwalkthroughthewoodsAmynewwordsandexpressionssurroundv.sur-+roundbesurroundedby...beautyspot风景点；美人痣hundred&thousandhundreds/thousandsof...fivehundred/seventhousandthrough(从内部)穿过across(从表面)穿过newwordsandexpressionsvisitorn.visit(v.)+-orplacev.放置n.地方coverv.覆盖n.封面piecen.碎片apieceof.../piecesof...ListeningcomprehensionWhatkindoftowndoyoulivein?Iliveinaveryoldtownwhichissurroundedbybeautifulwoods.Whydopeoplecomefromthecitytoourtown?Theycomefromthecitytoseeourtownandtowalkthroughthewoods.Whathavethevisitorsbeenaskedtodo?Visitorshavebeenaskedtokeepthewoodscleanandtidy.Whendidyougoforawalkinthewoods?IwentforawalkinthewoodslastWednesday.ListeningcomprehensionWhatmadeyouverysad?WhatIsawmademeverysad.Icountedsevenoldcarsandthreeoldrefrigerators.Thelitterbasketwereemptyandthegoundwascoveredwithpiecesofpaper,cigaretteends,oldtyres,emptybottlesandrustytins.Whatdidyoufindamongtherubbish?Ifoundsignwhichsaid,'Anyonewholeaveslitterinthesewoodswillbeprosecuted'.被动语态被动语态可以在不同的时态下使用be+V.ppbe动词根据时态变形一般现在时：be+V.pp一般过去时：be+V.ppam/is/are+V.ppwas/were+V.pp一般将来时：be+V.ppwillbe+V.ppam/is/aregoingtobe+V.ppbe+V.pp现在进行时：be+V.pp现在完成时：be+V.ppwas/were+being+V.pphave/hasbeen+V.pp过去进行时：be+V.pp过去完成时：be+V.pphadbeen+V.ppam/is/are+being+V.pp找出各时态下的结构中助动词否定句？助动词后加notreview复述文章（定、宾、主从句）被动语态在不同时态下的结构变化