＝He will do anything/something that he can to help us out.他会竭尽全力帮助我们。

You can stay wherever/where you want to.(地点状语从句)

你哪喜欢，哪呆着。

②wh­ever(引导让步状语从句时)＝no matter

wh­(只可引导让步状语从句)

Whenever/No matter when you came, I will put you up.

无论你何时来，我都会提供食宿。

③however (引导让步状语从句)

小贴士

Whatever/whichever无论引导名词性从句还是引导让步状语从句，都可在从句中作定语。

The content is the same, whichever book you choose.

--看看高考怎么考

①________hard you try, it is difficult to lose weight without cutting down the amount you eat.(2012·湖南卷，32)

A．However B．Whatever

C．Whichever D．Whenever

②The newcomer went to the library the other day and searched for________he could find about Mark Twain.(2012·辽宁卷，34)

A．wherever B．however C．whatever D．whichever

3. Using cocaine increases the user's heart rate and blood pressure.

　　吸食可卡因会使使用者的心率提高，血压上升。

　　句型公式：动名词短语作主语

　　学情诊断

①Collecting (collect) information about children's health is his job.