by oneself；oneself

by oneself；oneself

  by oneself＝alone，without help。强调“在无他人或他物的情况下”或“无帮助的情况下”；

  oneself作同位语，表示强调本人。

试比较：

If you come to my house，I’ll cook for you myself．

如果你来我家，我将亲自下厨。（强调亲手为你做饭）

Can you cook by yourself now？你现在能单独做饭了吗？（强调无他人协作）