sign有迹象;招牌;手势;符号;等意思，那么你知道sign的过去式是什么吗?下面一起来学习一下sign的过去式以及sign的用法和例句，希望对大家的学习有所帮助!
sign的过去式及其它时态
sign的过去式:signed
sign的复数:signs
sign过去分词:signed
sign现在分词:signing
sign第三人称单数:signs
sign的用法和例句
1、The imperialist powers forced the Qing Dynasty to sign a series of unequal treaties.
帝国主义列强迫使清王朝签订了一系列不平等条约.
2、Trade sanctions were imposed against any country that refused to sign the agreement.
凡拒签该协议的国家均受到贸易制裁。
3、There is every sign to show that the enemy will retreat.
种种迹象表明敌人要退却.
4、Officials fear that he might interpret the emphasis on diplomacy as a sign of weakness.
官员们担心他会把对外交的重视理解为软弱的表现。
5、She raised her finger to her lips as a sign of silence.
她把手指放到嘴唇上以示安静.
6、They will sign the union treaty only on their terms.
只有同意他们的条件，他们才会在联盟条约上签字。
7、Using a false accent over the phone is a sign of inferiority.
打电话时故意作出某种口音是自卑的表现.
8、Their envoy showed no sign of responding to our proposals.
他们的代表对我方的提议毫无回应的迹象.
9、He glanced briefly towards her but there was no sign of recognition.
他瞥了她一眼，但似乎没认出她来。
10、Looking around, I could see no sign of life.
四处环顾后, 我看不出有生命的迹象.
