「〜いい／よい」- Ease or Suitability

Explanation

「〜いい」（よいよい） is a common grammatical form in Japanese, primarily used to express "easy to..." or "suitable for...". This structure combines the verb's conjunctive form with 「いい」（よいよい） to convey the ease or suitability of an action or state.

Grammar Pattern

Grammar Point	Connection	Explanation
Verb Conjunctive Form + よい／いい	Verb Conjunctive Form + よい／いい	Indicates that an action or state is easy to perform or suitable.

Basic Usage and Examples

• この町まちは住すみよいです。
  Kono machi wa sumiyoi desu.
  This city is easy to live in.
  
• 彼かれの説明せつめいは分わかりよい。
  Kare no setsumei wa wakariyoi.
  His explanation is easy to understand.
  
• この本ほんは読よみよいです。
  Kono hon wa yomiyoi desu.
  This book is easy to read.
  
• この部屋へやは住すみよいです。
  Kono heya wa sumiyoi desu.
  This room is comfortable to live in.
  
• 彼女かのじょの話はなしは聞ききよいです。
  Kanojo no hanashi wa kikiyoi desu.
  Her story is pleasant to listen to.
  
• この料理りょうりは食たべよいです。
  Kono ryouri wa tabeyoi desu.
  This dish is delicious to eat.

Summary

「〜いい／よい」 is an important structure in Japanese, used to describe the suitability of things or the ease of states. Mastering its usage and nuances will help improve the accuracy and expressiveness of your Japanese.