guard的过去式和用法例句

　　guard做动词有看守;守卫;保卫;提防等意思，那么你知道guard的过去式是什么吗?接下来跟着学习啦小编来学习一下吧。

　　guard的过去式和其他时态：

学习啦在线学习网 　　过去式: guarded

　　过去分词: guarded

　　现在分词: guarding

　　guard的用法：

学习啦在线学习网 　　guard的用法1：guard的基本意思是为防御而进行警戒,可指“保护”“守卫”以防外敌侵入,也可指“看守”“控制”以防内部人外逃。引申可指“防范”“严守机密”“警惕”“预防”等。

　　guard的用法2：guard多用作及物动词,宾语通常是人,宾语后常接介词from表示“保护某人或某物不受…”; 偶尔也可用作不及物动词,与against连用表示“避免”“预防”。

学习啦在线学习网 　　guard的用法3：guard的过去分词guarded常用作形容词,在句中可作表语,意为“审慎的”“严守的”。

　　guard的过去式例句：

　　1. He is being guarded by a platoon of police.

学习啦在线学习网 　　有一队警察看守着他。

　　2. Environmental groups have given a guarded welcome to the Prime Minister's proposal.

　　环保组织对首相的提议表示谨慎的欢迎.

学习啦在线学习网 　　3. In the office, Dr. Lahey seemed less guarded, more relaxed.

学习啦在线学习网 　　莱希博士在办公室里看起来没有那么谨小慎微，放松了许多。

　　4. The camp is surrounded by razor-wire fences and guarded by military police.

　　营地周围架着尖利的铁丝网，且有宪兵看守。

学习啦在线学习网 　　5. Details of its past activities were zealously guarded.

学习啦在线学习网 　　它以往活动的详细情况被严格保密。

　　6. The formula is jealously guarded.

　　配方被小心翼翼地收藏着。

学习啦在线学习网 　　7. He closely guarded her identity.

　　他对她的身份守口如瓶。

　　8. The boy gave him a guarded look.

　　那个男孩充满戒心地瞧了他一眼。

　　9. You should be more guarded in what you say to reporters.

　　你对记者说话应更谨慎些。

学习啦在线学习网 　　10. The recipe for their drink is a closely guarded trade secret.

　　他们饮料的配方是严格保守的商业秘密。

　　11. When they exchanged ideas, their talk was too guarded.

　　在他们交换意见时, 说话都很谨慎.

　　12. Two fierce griffins guarded the entrance to the castle.

　　在城堡的进门处,守着两个凶猛的怪物.

学习啦在线学习网 　　13. The soldiers guarded the prince whenever he left the palace.

学习啦在线学习网 　　每当王子离开皇宫,士兵们都要保护他.

　　14. We were guarded by sentries against surprise attack.

　　我们由哨兵守卫,以免遭受突袭.

　　15. The player was guarded closely by her opponent.

　　那名运动员被她的对手紧紧地看住.