到上学期末为止，苏珊已经学了1000个英语单词。【by]的翻译：To the end, Susan had learned 1000 English words. 【by] 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

To go to school until the end, Susan has learned 1000 English words. [By]

To the end, Susan had learned 1000 English words. 【by]

To goes to school the end of the period up to, Susan has already studied 1000 English words.(by)

school until the end, Susan has been studying for a 1000 English words. [By]

To the end, Susan had learned 1000 English words. 【by]