用"it"做主语翻译1、他就不打算取得进步，你老是帮助他是没有用的。2、后来证实她是我姐姐的一位朋友。

1.It's always no use for you to help him,for he doesn't intent to go ahead.
2.It's proved at last that she is a friend of my sister's.

1.Although you help him all the time,it is unuseful if he does't want to progress. 2.It is sure later that she is my sister's friend.

1、他就不打算取得进步，你老是帮助他是没有用的。
It is useless that you always help him if he does not make the progress.
2、后来证实她是我姐姐的一位朋友。
Later，it was Proofed that she was a friend of my sister.

1.It's useless for you to help him all the time if he doesn't want to make any progress.
It turned out that she's one of my sister's friends.