thatisapen怎麼改成否定句

thatisapen改成否定句爲

That isn't，在that is的is後面加not就是否定形式。that is在英語中很常見，例如:that is an apple.那是一個蘋果。

that isn't a tomato.那不是西紅柿。

that is a pencil.那是一個根鉛筆。

that isn't a pen.那不是鋼筆。

that is cat.那是一隻貓。

that isn't a dog.那不是狗。