Are you good swimmers?No,I'm not.I skiing and made a snowman on my holiday.急找!怎么改错

问题描述:

Are you good swimmers?No,I'm not.I skiing and made a snowman on my holiday.急找!怎么改错
还有:
My schoolbag is bigger and heavier than Mary.
Row boats is Amy's hobby.
Were your mother tired yesterday?
Are you good swimmers?No,I'm not.I skiing and made a snowman on my holiday.

Are you a good swimmer?No,I'm not.I skiied and made a snowman ..My schoolbag is bigger and heavier than Mary's.Rowing boats is Amy's hobby.Was your mather tired yesterday?这个 Mary's好像不用加 “ '”吧当然要加啊。。表示名词所有格都要加's的啊。。比如Jim's bike就是吉姆的自行车啊