ways to express is it (isn't it), does it (doesn't it) etc. in Korean
What would be the closest Korean equivalents of the last part of the sentences below?

In fact, it wasn't true, was it?
You've heard me, haven't you?
He doesn't speak German, does he?
etc.

I assume one could use something like 맞지 (맞죠)?, 그렇지 (그렇죠)?.
But I also assume that 1) those ones are not necessarily the closest equivalents 2) there are lots of other ways to express the same meaning.

고맙습니다 ~

Question

ways to express is it (isn't it), does it (doesn't it) etc. in Korean
What would be the closest Korean equivalents of the last part of the sentences below?

In fact, it wasn't true, was it?
You've heard me, haven't you?
He doesn't speak German, does he?
etc.

I assume one could use something like 맞지 (맞죠)?, 그렇지 (그렇죠)?.
But I also assume that 1) those ones are not necessarily the closest equivalents 2) there are lots of other ways to express the same meaning.

고맙습니다 ~

Answer

그래? 그렇죠? 안그래? 안그렇죠? 맞아? 맞지? 맞죠? 했지? 안했지? 했니? 안했니? ....lots more, yes.

In fact, it wasn't true, was it?
사실은, 그게 진실이 아니야.  그래?/진실이야?)
(or 안그래? means negative form of whole sentence, mean Aren't I right?)
You've heard me, haven't you? 
내 소식 들었지? 못들었니? 
He doesn't speak German, does he?
그 사람은 독일말 못 하잖아. 해?/독일말 해?

We actually repeat the sentence to make sure the state. 
It is like question tags in English.
So try repeat the verb with negative form of '안+verb), then you will get something.

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