求英语大神。为什么？because 或because of不能放在句中?下面图中这个句子

Question

求英语大神。为什么？because 或because of不能放在句中?下面图中这个句子中间不就是有一个because吗？because放句中引导原因状语从句不可以吗，为什么老师说作文中不可以用？

Answer 1

because后接一个句子，引导原因状语从句eg：I didn't go to park yesterday because it rained. because 与so只能在句子中出现一个，上述句子可改为It rained so i didn't go to park yesterday.because of接名词或名词短语或动名词短语（of为介词，后加doing）上述句子可改为I didn't go to park yesterday because of the rain.

Answer 2

becasue后面跟一个句子，becasue of后面只能跟短语。