<「白い机」「四角い机」 a white desk(白い机) a square desk(四角い机) 形容詞=名詞を修飾する(=詳しく説明する) white や square が、desk を「どんな机なのか」説明 「私がイケアで先週買った机」と言いたいときは? a desk which I got at IKEA last week(私が先週イケアで買った机) 「5本の脚がある机」と言いたいとき a desk which has five legs(5本の脚がある机) <説明したい名詞がモノのときはwhichを使いますが、「人」のときはwho> a table which I like the best a pen which has 3 colors a book which he read 4 times an apple which they sell for 2 dollars a man who I saw yesterday I want a car that has a GPS navigator. I want to buy a house that has a big backyard. I like books that have a lot of beautiful pictures Helicopters have wings that spin around My son has a lot of toy trains that can move by butteries. Electricity is energy that can make heat and light.>