Sentence pattern don’t want it to happen:【verb てform + しまう】
On this page, you can learn Japanese grammar to talk about the situation you don't want to have.
Sentence pattern
Sentence pattern 
Sentence pattern A is B. 【AはBです。】
This is a basic Japanese sentence pattern with which you can say many things.
Sentence pattern I am + Noun.【I は Noun です。】
On this page, you can learn how to say 'I am + Noun.' in Japanese.
Sentence pattern have not + verb-ed:【verb た form + ことがありません】
On this page, you can learn Japanese grammar for telling something you have not done before.
Sentence pattern How to show your appreciation: てform + くれる
Which sentence is correct if you want to show appreciation and say 'My friend taught how to use chopsticks.'?
Sentence pattern 【Japanese grammar】verb て form + みたいです (mitaidesu) = want to + verb
On this page, you can learn Japanese grammar for 'want to + verb'.
Sentence pattern Honorifics（敬語・けいご）
There are three groups for Japanese honorifics. Let's have a look carefully so that you can use them properly in a daily conversation.
Sentence pattern good at + noun:【noun + が上手です】
On this page, you can learn Japanese grammar for 'good at + noun'.
Sentence pattern can:【dict. form + こともあります】
On this page, you can learn Japanese grammar for expressing the possibility.
Sentence pattern It is adjective to verb:【verb dict. form + のは adjective】
On this page, you can learn Japanese grammar for 'It is adjective to verb'.