5、ntroducesb.tosb.把某人介绍给某人e.g.A:Whocanintroducethemtous?B:ThemanisRobertPattinsonandthewomanisAdele.Theyarebothfamousintheworld.2.linen.行;排v.排队3e.g.Please line uponeafteranother.请按顺序排队。Theballwentoverthe line.球越线出界了。Atlast,letthestudentshaveadictation.Step4