M1U1There-wasn`-t-a-clock-here-before.

Thiswasthepig`shouse.Therewasabigmouse.Thisisthecat`shouse.Thereisn`tamouse.Listenandanswer:DoesLondonlookdifferentnow?Yes,itdoes.Whatisdifferent?Whatisdifferent?Whatisdifferent?Therewasahouse.Thereweren`tanybenchesherebefore.Whatisdifferent?Therearebirds,too.There`saclock.Therewasn`taclockherebefore.Thereisonenow.Whatcantheydo?feedthebirds现在时过去时一个（单数）is/isn’twas/wasn’t两个或两个以上（复数）are/aren’twere/weren’tTherebe句型用法Thereweren’tanybencheesherebefore.Therewasonlyahouse.beforeNow你能用Thereis/Therewas,Thereare/Therewere,Therewasn’t/Thereweren’t说一说公园以前和现在有什么不同?Therewasn’taclockherebefore.Thereisonenow.beforeNow1._______________anybenchesherebefore.2._______________onlyahousebefore.4._______________onenow.3._______________aclockherebefore.(没有）5._______________manysweets.6._______________manyfruits.7._______________children’spaintingsonthewalls.8._______________lotsofgames.用therebe的适当形式填空。Thereweren’tTherewasTherewasn’tThereisThereareThereareThereareThereare