是因为我不确定你什么时候来
“because I wasn't sure when you'd come.”
THE DIALOGUE REEL
我没有告诉我妈
“I didn't tell my mom”
是因为 我 不确定 你什么时候 来
“because I wasn't sure when you'd come.”
所以没有跟我妈讲
“So I didn't tell her.”
“Don't blame me for hiding you; you didn't give me a clear schedule to work with.”
Introducing a partner to one's parents is a major, serious milestone in Chinese relationships; it requires precise timing and confirmation to prevent unwarranted domestic drama.
LEARNING CHUNKS & PARTICLES
it is because
Used at the start of a clause to introduce a direct rationale or defense.
not sure / uncertain
A very standard spoken phrase for expressing factual uncertainty or ambiguity.