はとがと天気！
私の日本語の先生は私に天気について書く時　は「が」をつかいます。
でも時々日本の友達「は」を書きます。

My Japanese language teacher taught me to add the "GA" particle!
However, from time to time, my Japanese friends use "WA" particle!
Is there any special rule that I forget?

Question

はとがと天気！
私の日本語の先生は私に天気について書く時　は「が」をつかいます。
でも時々日本の友達「は」を書きます。

My Japanese language teacher taught me to add the "GA" particle!
However, from time to time, my Japanese friends use "WA" particle!
Is there any special rule that I forget?

Answer

I'm assuming you are referring to 雨が降る and 雪が降る, right?
In general, these expressions use the particle が。However, it's possible to use は instead in some contexts. There are quite a few situations where this change is possible. One of the most common ones is when we want to emphasize RAIN or SNOW and contrast it with something else.

昨日、ずっと雨が降ってたけど、雪は降らなかった。
Yesterday it rained all day, but it did NOT snow (it feels like we are contrasting snow and rain. It rained but snow "didn't happen").

A: スペインの夏いいな！暖かいし、雨が降らないし・・・
B: え？確かに暖かいけど雨は降るよ！
A: Spanish summers are great... It's warm and it doesn't rain...
B: Huh? It certainly is warm, but it DOES rain!

Answer

Actually  there aren't any specific rules, all depend on the situation. 
For example: 
今日は晴(は)れています。(Today it's sunny.)
雨がふっています。(It's raining.) 
昨日はくもっていましたが、雨はふりませんでした。(Yesterday it was cloudy but it didn't rain.) 
昨日はくもっていて、雨がふっていました。(Yesterday, it was cloudy and it was raining.)

I hope Japanese teachers explain about it with more details. 
I hope this helps you for now.

Answer

は：テーマを提示する
が：主語を提示する

Answers · 5

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