●探究1Id don't know how to increase my reading spee 【解析】 “疑问词+动词不定式”作宾语 【注意】 what to d0后不需要跟宾语 how to do后必须跟宾语 【拓展】“疑问词+动词不定式”结构: know,what,动词不定 tell whch,式(todo) wonder, when ask where find out,how+ learn+●探究1.I don’t know how to increase my reading speed. 【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 【拓展】“疑问词+动词不定式”结构： know， tell, wonder, ask, find out, learn+ what, which, when, where, how + 动词不定 式（to do）