be good for单词相关例句：
Nothing so bad, as not to be good for something. 塞翁失马，安知非福。
be good at单词相关例句：

Be positive and proactive; be good at learning and thinking.

乐观的心态，积极向上，勤学好问，善于思考；

Conduct oneself amicably , be good at communicating with person.

为人友善，善于与人沟通。

somebody单词相关例句：
Believe somebody on his bare word. 人言无据，切勿轻信。
We can't all be heroes. Somebody has to sit on the curb and clap as they go by. (W. Roger )——    我们不可能都成为英雄。总得有人在英雄走过的时候坐在路边鼓掌。（罗杰）
A man can fail many times, but he isn't a failure until he begins to blame somebody else.——( J. Burroughs )    一个人可以失败许多次，但是只要他没有开始责怪别人，他还不是一个失败者。（巴勒斯）

We should ask somebody to help us.

我们应该请个人来帮我们。

Why does somebody like to wear chromatic briefs?

为什么有人喜欢穿彩色内裤？

At any event, nobody could trick even once somebody as resourceful and tough as Dinitz.

但无论如何，对于象迪尼茨这样足智多谋和难以对付的人来说，欺诈手法既使只使用一次也不会得逞。

He fancied he heard somebody following him.

他觉得好象（听见）有人在跟踪。

cab it 乘车 catch it 受责，受罚 come it 尽自己分内 come it strong 做得过分 walk it 步行 make it 办成 take it out of somebody 拿某人出气
see somebody do something→somebody +be +seen to do something
例：make somebody do something→somebody+ be +made to do something