Does it matter to use が or は in one sentence lines, for example: textbook questions?


So when doing textbooks, it just asks me to write translate from english to
japanese. The sentence I was just doing was, "Since my family will come to
Japan, I will show them around Kyoto. In this one sentence, does it matter if
I use は or が? 家族は/家族が

Do you think が or は works better?

My thinking is that you use は when you want to emphasize what comes next, and
が for when you want to emphasize when comes before.

If someone asked me, what is your family doing? Then I think は would be
better, or if someone asked me who is coming to Japan, I think が would work
better.

But here, in one setences lines and stuff, is there really one thing you want
to empasize? I could be totally wrong, in which case feel free to correct me.
ありがとうございます




The correct particle choice depends mainly on whether 私の家族 is already in the
["universe of discourse"](https://japanese.stackexchange.com/a/51/5010). If
you mention your family for the first time in the conversation, you would say
"私の家族 **が** 来月日本に来るので...". However, in the last half of an essay about your
family, you say "私の家族 **は** 来月日本に来るので...".

If this is the only sentence in a translation task and no further context is
available, it's probably better to choose が.

(By the way, you should not "thank in advance" like that. Please read
[this](https://japanese.meta.stackexchange.com/q/820/5010).)




The correct particle choice depends mainly on whether 私の家族 is already in the
["universe of discourse"](https://japanese.stackexchange.com/a/51/5010). If
you mention your family for the first time in the conversation, you would say
"私の家族 **が** 来月日本に来るので...". However, in the last half of an essay about your
family, you say "私の家族 **は** 来月日本に来るので...".

If this is the only sentence in a translation task and no further context is
available, it's probably better to choose が.

(By the way, you should not "thank in advance" like that. Please read
[this](https://japanese.meta.stackexchange.com/q/820/5010).)

