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I have this sentence:

> 明日、日本語のクラブがあるけど、行く？

which has the given translation of

> There’s Japanese club tomorrow, want to go? (lit: Tomorrow, Japanese club
> exists but go?)

I have two questions on this sentence. Firstly, since the sentence is
referring to something occurring tomorrow, why wouldn't I have the `は` after
`明日` so it becomes this?

> 明日は、日本語のクラブがあるけど、行く？

Second, what's the purpose of the `けど` particle? In English at least, I don't
feel a need to introduce any contrasting feeling to the sentence since it's
just a straight question. In short, why not this instead?

> 明日、日本語のクラブがある。行く？
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2017-12-19T11:41:56.633
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2017-12-19T16:15:41.593
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particles
Usage of particles in 明日、日本語のクラブがあるけど、行く？
First, There really isn't an equivalent for the けど in English. That is just
the way they speak. Japanese is a very indirect language, and they tend to
append a "but" word to just about everything, as I am sure you know. Without
the けど it sounds blunt, and more like a statement of fact than what you would
use in an invitation. If you were just trying to tell somebody "Hey, we have
Japanese club tomorrow!" you could not use the けど.

The 明日は ｖｓ 明日、I believe is just a question of colloquial vs formal. I have
never really heard anybody talking to those of their same 身分 say 明日は.

がんばって！
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2017-12-20T03:49:46.157
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From what I've gathered through the linked posts in the comments, `は` is
omitted since the emphasis of the sentence is not quite on "tomorrow" but
rather on "Japanese club". If included, it would imply that there's something
particular about tomorrow, and maybe a bit of contrasting feeling as well.

As for `けど`, it seems it can also act as a "context particle" in that it
provides some background before introducing the `行く？` question.
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