In Japanese grammar, what is the difference between wa (は) and ga (が) particles?
user
Wa (は) is a topic marker and ga (が) is a subject marker. Wa (は) is used to mark something that has already been introduced to the conversation and is familiar with both the speaker and the listener. Ga (が) is used when something is newly introduced into the conversation.
assistant
Could you provide a couple of example sentences, written in Japanese with the English translation in parentheses please?
user
I'm glad to do that! In the following, two example sentences in Japanese with their English translations:

彼女は先生です (Kanojo wa sensei desu) - She is a teacher.
私は学生です (Watashi wa gakusei desu) - I am a student.

Do you need more examples or have other questions related to Japan or the Japanese language?
assistant
From a strictly technical perspective is Japanese an efficient language?
user