The next day,I had to prepare the food for the party,I was happy that my mother could help me.这是什么意思、是个什么句子

The next day,I had to prepare the food for the party,I was happy that my mother could help me.
这是什么意思、是个什么句子

第二天,我不得不为派对准备食物.而令我高兴的是,我妈妈会帮我.
The next day,做时间状语
I had to prepare the food for the party 一般过去时,表示已经完成,对现在没有影响.也是因此,the next day翻译为‘第二天’而不是‘明天’
,I was happy that my mother could help me.逗号替代and的作用,将前后两个完整句子连接起来.I was happy that是主句,that my mother could help me是作宾语的名词性从句.

译为：明天（第二天），我不得不为晚会准备食物，我很高兴我妈妈能帮我

意思是：第二天，我不得不为聚会准备食物，我很高兴我妈妈能够帮助我。这是个错的句子，应该在第二个逗号后加一个连词，比如and.