复习巩固:1
Thisistheman_____Ijusttalkedtojustnow
Thisistheboy____motherisadoctor
Thisisthefactory_____Ivisitedyesterday
Thisisthefactory_____myfatherworkedlastyear
Ineedsomephotos____showdailylifeatschool
who/thatwho/thatwhich/thatwherethat/whichWecanseeaverydirtyriver
Thereislotsofrubbish
Thefishdiedbecauseofthewaterpollution
Whatcanyousee
Wecanseethatrubbishisbeingburnt
Thesmokegoesintotheair
Itcausesairpollution
Whatcanyousee
Wecanseesomewastepaper
Itcanberecycled,soitiswastefultothrowitaway
Whatcanyousee
Comparedwiththelastfewyears,theenvironmentisgettingworse
Fromthepicturesabove,welearnthattheenvironmentalproblemisserious
Itisourdutytoprotecttheenvironment
Andweshouldsaveenergy
Weshouldtrytoreuseeverythingthatisreusable,orourworldwillbehopeless
Whatcanwelearnfromthepicturesabove