人教版必修4 unit 2 discovering useful structures 练习

Helpingpeopleinneedofhelpisnice.Growingsuperhybridriceisnoteasy.Learningmoreaboutfarmingisnotdifficult.Doingresearchinthecountrysideisnoteasyasinthecity.GettingridofhungerisveryimportantforsomeAfricancountries.Explainingthisagainisimportantorwewillconfusethestudents.,AnswerkeyforExercise2onpage13:,Discoveringusefulstructures,1stgroup:todo2ndgroup:doing,1stgroup:promise,fail,hope,afford,hope,plan2ndgroup:enjoy,finish,mind,miss,keep3rdgroup:try,stop,begin,forget,like,start,AnswerkeyforExercise3onpage13:,Itwasgood_theyoungmanworkingwithhisfatherinthefields.Paulclearlyenjoyed_abouthowtofarmwell.WhenItalkedtohim,hetoldmehedreamedof_hisownfarm.Hewillkeep_withscientificmethodsoffarming.Hewillkeep_newideassohecanhelpfarmersaroundChina.,AnswerkeyforExercise4onpage13:,tosee,learning,having,toexperiment,tryingnot,Iamquiteinterested_whatwillhappentoPaulsfarminthefuture.Someday,hehopes_superwheat,likeYuanLongpingssuperrice.Heisnotafraid_,becauseheknowsfailurewillhelphimlearnmore,Hecaresverylittleabout_abighouseandacar.Hisfathersaysthathehasneverregretted_hissontostudyabroad.,tofindout,todevelop,tofail,owing,sending,Usingstructures,1Smoking2paying3getting4Learning5playing,6Doing7Using8dancing9exchanging10supplying,AnswerkeyforExercise1onpage50:,Anoldfarmerwasabout_.Hewanted_surethathissonswouldstop_amongthemselves.Hehoped_them_thefarmsuccessfully.Theoldmancalledhissonstogetherandsaid,“Mysons,Imabout_thislife.YouwillfindallthatIhaveinthefarm.”,todie,tomake,fighting,toencourage,tomanage,toleave,AnswerkeyforExercise2onpage50:,Sometimelater,aftertheirfatherhaddied,thesonsstarted_longhoursinthefields.Theythoughtthattheirfatherhadburiedatreasureintheground.Theykept_frommorntillnight,_thesoiloveragainandagain,butstillfailed_anytreasure.Thatyearscrops,however,werebetterthananyoftheirfatherscropsandsoldforaveryhighprice.Intheend,theyoungmenfoundthat_hardistruly