到上学期末为止,苏珊已经学了1000个英语单词.(by)
2019-03-31
到上学期末为止,苏珊已经学了1000个英语单词.(by)
优质解答
By the end of this team,Susan has learned 1000 English words.
By是现在完成时的标志,用现在完成时（have/has+done）.
^-^
By the end of this team,Susan has learned 1000 English words.
By是现在完成时的标志,用现在完成时（have/has+done）.
^-^