That is because…句型
“That is because…”句型中從屬連詞because引導(dǎo)的名詞性從句在此作表語(yǔ)， 這也是個(gè)常用句型， 意爲(wèi)“這就是爲(wèi)什麼……/因爲(wèi)……”。 例如：
He did not see the film last night. That is because he had to help his little sister with her homework. 昨天晚上他沒(méi)有去看電影， 那是因爲(wèi)他得幫助他的妹妹做作業(yè)。 (第一句話(huà)說(shuō)明結(jié)果， 第二句話(huà)說(shuō)明原因)