Unit4AmazingScienceTopic3Chinaisthethirdnationthatsentapersonintospace.重点单词electronicadj.电子的doubtn.v.怀疑,疑惑tinyadj.极小的,微小的insideprep.在……内;在……里adv.在里面brainn.脑;智力;脑力cancelv.取消,撤销;废止connectv.连接;把……联系起来certainadj.确定的,无疑的;一定会……warnv.警告,告诫mightv.可以,可能houseworkn.家务劳动,家务事重点短语1.nodoubt无疑地2.forinstance例如3.forcertain肯定,确定,无疑4.onone’sown独自,单独重点句型1.ItprovesthatChinahasmadegreatprogressinitsspaceindustry.2.Thereisnodoubtthatcomputersareveryusefulintechnologyandbusiness.3.Besides,noteverythingwereadontheInternetistrueorgoodforus.4.Nooneknowsforcertain,butmostpeoplethinkthatrobotswillbepartofourlives.重点语法1.定语从句(I)that,which,whoReviewofUnits3-4重点单词magazinen.杂志wifen.妻子,太太paintn.油漆;油漆涂层v.在……刷油漆;用颜料画palacen.王宫,宫殿towern.塔