|'No matter' can be used with who, whose, what, which, where, when and how.|
These expressions are conjunctions, used to join clauses together. This also means 'it is not important who/what etc'.
a. I'll love you no matter what you do.
b. No matter where you go. I'll follow you.
|We use a present tense with a future meaning after 'no matter'.|
a. No matter where you go, you'll find Coca-Cola.
b. You'll be welcome no matter when you come.
|2. no matter who etc and whoever etc|
|The conjunctions 'no matter who/what etc' are used rather like whoever, whatever etc.|
a. No matter what you say, I won't believe you. Whatever you say, I won't believe you.
b. Phone me when you arrive, no matter how late it is. Phone me when you arrive, however late it is.
|However, clauses with whoever/whatever/whichever can be used as subjects or objects. Clauses with no matter who etc cannot be used in this way.|
a. Whatever you do is fine with me. (BUT NOT No matter what you do is fine with me.)
b. You can have whichever you like. (BUT NOT You can have no matter which you like.
|3. no matter and it doesn't matter|
|Because no matter... is a conjunction, it must be used with two clauses.|
No matter when you come, you'll be welcome. (BUT NOT No matter when you come.)
|To introduce just one clause, we can use It doesn't matter.|
It doesn't matter when you come.
|4. use without a verb|
|However, 'no matter what' can be used at the end of a clause, without a following verb.|
I'll always love you, no matter what. (=... no matter what happens.)