关于英语句子的时态she said since the day she went to school,she was e

she said since the day she went to school,she had been extremely delighted and felt a strong sense of accomplishment,coz she had learnt many new things and made loads of good friends.
这里你用了since自从.起,后面跟着的变化应该用完成时表示持续的状态.标准的用法举例：since she went to school,she has been delighted.
但是这里不能用has,必须用had,因为你前面是said.所以简单的说,since后面的句子用过去式,之后的句子用完成时；但是这个完成时用had还是have(has)取决于整句话的总时态.

she said since she went to school,she was extremely delighted and felt a strong sense of accomplishment coz she learnt many new things and made loads of good friends.