3、yon依赖;取决于二.重点句型、1.Whataboutdoingsth?例:Whataboutlisteningtotapes?2.by的用法a.介词 prep. (指交通等)乘;例:The man came by bus. 那人是坐公共汽车来的。They went to Shanghai by plane. 他们坐飞机去上海。b.通过结构:by+V-ingIstudybymakingwordcards.3.现在完成时态结构:havedone例:Haveyoueverstudiedwithagroup?4.It’s+adj+(forsb)todosth做某事对