比赛马上就要开始了，妈妈给了我一个加油的手势。

sign
1. 名词 [c] (notice) 指示牌
a sign saying "No Exit"
一块写着“禁止入内”的指示牌
2. 名词 [c] (also： road sign) 路标
3. 名词 [c] (gesture) (with hand etc) 手势
the V-for-victory sign
代表胜利的V字手势
4. 名词 [数] [ 音] (symbol) 符号
an equals sign
一个等于号
5. 名词 [c/u] (indication，evidence) 迹象
The sky is clear and there's no sign of rain.
天空晴朗，丝毫没有要下雨的迹象。
6. 名词 [c] [占星术] 星座
7. 及物动词 [+document] 签署
8. 及物动词 [+TV programme] 搜趣网(for deaf people) 用手语演播
9. 及物动词 [足球] [+player] 与…签约
10. 不及物动词 (use sign language) 使用手语
11. 不及物动词 [足球] [player+] 签约
make a sign
做手势
a plus/minus sign
正/负号
there's no sign of her changing her mind
她没有任何要改变主意的表示
he was showing signs of improvement
他的身体有好转的迹象
a sign of the times
时代的特征
it's a good/bad sign
这是个好/坏兆头
sign one's name
签名
as a sign of...=in sign of [Source: nciku_tw ]
作为的表示
The sign says that dogs and other animals are not allowed in the children's area.
标志牌上写着，狗和其它动物均不得搜趣网进入儿童区。
Be careful, the sign says that the next one is a S-bend.
路标显示下一路段是S形弯道。
Many Hollywood stars ask their partner to sign a prenuptial agreement when they get engaged.
很多好莱坞明星在订婚时，都会要求对方签署一份婚前协议搜趣网。
Please, come along, sign this paper and show your support for the campaign. Thank you.
麻烦您过来，在这张纸上签个名，以示您对运动的支持。谢谢。
Please sign the back of this check and give it to Mary.
请在支票背面签字，然后把它交给玛丽。
Sign that contract, you have the ball at your feet now.
签了那份合同吧，机会就在你面前。
The symbol for the pound, is a script capital letter L pierced horizontally with an end dash or an equal sign: £.
英镑的符号是一个手写体的大写字母L,然后有一个杠横穿过来，这样就成了符号：£。
The dollar symbol "$" is the inCStVpRnternational sign for money.
美元符号 “$”是国际通用的货币符号。
Have you noticed the road sign saying you should not drive above 60 miles an hour?
你注意路标了么，上面写着时速不允许超过60公里。

先组成词，手势
小明向我打手势！
这样就可以