到上个学期结束时我们已经学了七首英文歌曲了(英语翻译,用by the end of)
问题描述：
到上个学期结束时我们已经学了七首英文歌曲了(英语翻译,用by the end of)
答
We have learned seven pieces of english songs by the end of last term.
答
We'd learnt seven English songs by the end of last term(或者semester).
答
We had learned seven English songs by the end of last term.
这里要用过去完成时态.