He was outside when I called him.you 后面能跟was 嗎?you were你知道為什么要跟were嗎?因為you 要跟are,過去式自然就是were了，你別問我為什么是are....我知道要跟are, 但是要解釋為什么要跟are....老師要求isare 都是系動詞也叫be動詞is用在第三人稱 he she it以及各可數(shù)名詞單數(shù)、不可數(shù)及動名詞后 例：He is a boy.The apple is red.are用于名詞復(fù)數(shù)及we they you 等代詞后 例：You are so clever. The trees are dead. is過去式wasare過去式were is和are過去分詞been I搭配am