主語(yǔ)從句中不缺少主語(yǔ),賓語(yǔ)或表語(yǔ)時(shí),用that 引導(dǎo).如：That our team won the game is exciting .反之,用what .如：What we need is money .(what 作主語(yǔ)）
What she dislikes is our favourite .(what 作賓語(yǔ)）