3、to increasemy readingspeed.【解析】“疑问词+动词不定式”作宾语【注意】what to do后不需要跟宾语how to do后必须跟宾语hoetodoit【拓展】“疑问词+动词不定式”结构:know,tell,wonder,ask,findout, learn+what,which,when,where,how +动词不定式(to do)3.I oftenmake mistakes ingrammar.(1) make mistakes犯错make mistakes in在某方面犯错(2) by mistake错误地1bWhatothe
7、rds.B:Youcanwritethenewwordsinyournotebookandstudythemathome.Maybe you shouldjoinan English club.【解析】join/join in/take part in(1) join=be a member of参加,指加入某种组织,并成为其中的一员。join the army / party入伍/党join the club加入俱乐部◆join in后接活动名称◆joinsb.加入到某个人群之中(2) take part in参加,指加入群体活动中并在活动中发挥重要作用。2aW