no matter…是不是引导让步状语从句时必须放句首?

（5）“no matter+疑问词”或“疑问词-ever”的含义为“……都……；不管……都……”，它们引导的让步状语从句可以互换。例如：

No matter what happened, he would not mind. (=Whatever happened, he would not mind.)无论发生了什么，他都不会介意的。

No matter what / which / who / where / when / whose＋从句，＋主句.(注意从句中的时态一般情况下用一般现在时态。)如：
No matter what you do, you must do it well.请比较：Whatever you do, you must do it well. 无论你做什么，一定要做好。
No matter where you go, please let me know.请比较：Wherever you go, please let me know.你无论去哪儿，请通知我。
（说明：这两种句型形式不同，而意义完全相同。）
（注意：I will tell whoever would like to read it. 句中的whoever不能用whomever来代替。因为它即作动词tell的宾语，又作后面从句的主语。）

No matter who you are, you must keep the law.(=Whoever you are, you must keep the law.不管你是谁，你都要遵纪守法。

但“no matter+疑问词”结构只能引导让步状语从句，而“疑问词-ever”还可以引导名词性从句。例如：

Whatever(=No matter what)you say, I won " t believe you. (Whatever 引导让步状语从句)无论你说什么，我都不会相信你。

I " ll eat whatever(≠no matter what)you give me. (whatever引导宾语从句)你给我吃什