Particles may seem a little foreign to you at first, but for the most part, they aren't too difficult to grasp.
These particles are placed after a word (or phrase) and show its relationship (grammatical function) to the rest of the sentence.
In other words, the particle itself isn't really translatable, but it tells you a lot about the function of the word it follows.
The best way to learn to use them is to memorize useful examples and try them out for size!
shows the main topic of the conversation. It may be helpful to think of it as "As for..."
あなた は やさしい。
Makes "you" the main topic: "As for YOU, you are nice."
sometimes the difference between wa and ga is hard to tell. Sometimes they can be used interchangeably with only a slight change in meaning. See next entry for more on this.
ねこ が へん。
Makes the "cat" the subject
The topic particle は can easily be confused with the subject particle が. That is because は overrides が, in other words, in a sentence something can very easily be both the topic and the subject of that sentence. In such cases the が "disappears" and it looks like the は is acting as a subject marker.
Take this simple sentence.
"I" (that is the speaker, Clay) is the topic and now this is known, it won't be repeated unless the topic changes.
What is the subject of the sentence? That's right - "I" watashi is. But because "I" is also the topic only the topic marker は is used. Now we'll let Clay continue and say another sentence ...
"cats" is the subject here. "I" is still the topic. He could have said "watashi wa neko ga suki desu." but that is unnecessary because he has already said "watashi wa" establishing the topic in the previous sentence.
本 を よみました。
it makes "book" the object. If we were to say "I" it would be watashi wa at the beginning.
日本 に いきましょう！
There is movement going to Japan or shows time (at)
６時 に いきましょう！
日本 で 遊びましょう！
Notice there is no movement
See the "Particles and Conjunctions" guide for more on this.