1X があります
Polite form of ある with the が particle, used to indicate something INANIMATE exists.
2X がいます
Polite form of いる with the が particle, used to indicate something ANIMATE exists.
3Describing where things are (1)
Noun は (ここ/そこ/あそこ) です。
4Describing where things are (2)
X は Y の (location word, like 右 or 上) です。
6隣
となり, next to. Typically used for two people or buildings found side by side.
7横
よこ, side. You can use this to indicate that something is "at the side" of another object. It's like the word 隣 except it can be used for a wider range of things.
8間
あいだ, between two things
10Present affirmative です
です
11Present negative です
じゃないです
13Past negative です
じゃなかったです
14も
Also. You often times replace は and を with も, but with に and で you simply follow up these particles with も.
15Time
When you use a bare noun, such as 一時間, to express the duration of an activity, it does NOT need to be followed up with a particle. Add ぐらい to say it at as an approximation. Use 半 for half an hour.
16Quantity words
Quantity words such as たくさん can be added either directly before the noun or after the particle that follows the noun.
17たくさん
Many, usually written in kana.
18と use 1
Connects two nouns together. A と B. (A and B)
19と use 2
Describes with whom you do something with. Placed after the person you're doing the verb with.
20(Polite) Past affirmative verb
Change the verb into ます form and change す into した. For instance, 会う becomes 会います which then becomes 会いました.
21(Polite) Past negative verb
Change the verb into ません form and add on でした. For instance, 会う becomes 会いません which then becomes 会いませんでした.