be on be on guardkeep guardstand guard意思都是相等的吗?可以做同义句转换吗?

来源：学生作业帮编辑：拍题作业网作业帮分类：英语作业时间：2024/04/28 00:04:56

be on
be on guard
keep guard
stand guard
意思都是相等的吗?可以做同义句转换吗?

on guard:
a.值班(警戒)
例句与用法:
1.While danger threatens we must all be on guard.
危险正逼近,我们必须保持警惕.
2.There are soldiers on guard at the gate.
大门口有士兵在守卫.
3.Be on guard when somebody flatters you.
有人奉承你时,一定要当心.
4.The citizens were warned to be on guard against a sudden night attack.
市民们得到通知,要提防夜间的突然袭击.
keep guard为“站岗”的意思
stand guard为“承担保卫”的意思
不相等

英语be keen on三个同义句转换! be here on time同义句 Please be here on time.同义句 You must be on time for school.的同义句同义句转换：There will probably be no schools on Mars. there will be a foootball game on tv tonight同义句转换 be divided on的意思 be on什么意思 “be going to+动词原型”和现在进行时表示将来时可以做同义句转换吗?有什么区别? "be based on"与“be found on"都有"建立在.的基础上"的意思,那他们有区别吗? be on the phone 和be talking on the phone意思一样吗 she is sure to be on time 同义句