詞彙精選：guard的用法和辨析
一、詳細釋義：
n.
哨兵；衛兵；警備員；看守員；警衛員 [C]
例句：
The prisoner slipped past the guards on the gate and escaped.
犯人從門衛身旁溜出去逃走了。
例句：
The guard was punished for deserting his post.
衛兵因擅離職守而受到處罰。
護衛隊；（英國等的）皇家禁衛軍（常大寫）
例句：
He spent part of the war in the National Guard.
他在國家護衛隊扮演了戰爭中一份子。
守衛；警戒；看守 [U]
例句：
Another ward in the sanatorium had no guard on it at all.
在醫院的另一個病房根本沒有保衛監視。
防護裝置，防護物 [C]
例句：
Ensure the guard is in place before operating the machine.
一定要在防護裝置放到位後再開機器。
【英】（火車的）列車長 [C]
例句：
The guard wave his flag and the train leave the station.
列車長搖動手中的旗子，火車隨之開出車站。
例句：
The train robbers coshed the guard.
搶劫列車的匪徒用短棍襲擊列車長。
（拳擊等的）防禦姿勢，防守 [U]
例句：
He got in under his opponent's guard.
雖然對手擺出防禦姿勢，但仍被他擊中。
v.
保衛；守衛；警衛 [T]
例句：
The gate is guarded by soldiers; you can't go without a pass.
大門有兵守衛，你沒有通行證過不去。
例句：
Troops were detailed to guard the frontiers.
派遣部隊去防守邊界。
看守；監視 [T]
例句：
The dog was guarding its owner's luggage.
狗守護着主人的行李。
例句：
A detachment of ten men remained behind to guard the prisoners.
由十名士兵組成的分遣隊留在後面看守囚犯。
控制；使（言詞等）謹慎 [T]
例句：
He is guarded in his answers, but his excuses are groundless. His guilt is obvious.
他謹慎地回答，但其辯解站不住腳，他明顯有罪。
防範；警惕(+against) [I]
例句：
The neighboring countries were on guard against the military expansion of that country.
那個國家的軍事擴張引起鄰國的警惕。
例句：
We should be on guard against the enemy's invasion.
我們要防範敵人的入侵。
二、詞義辨析：
defend,protect,safeguard,guard,shield,shelter,harbour
這些動詞均有“保護、保衛”之意。defend普通用詞，指用武力或其它措施使人或物不受損害，消除危險。用作比喻時，指堅持某種行動、決定或意見。 protect普通用詞，指用某種手段作爲防禦工具以防危險或傷害。safeguard語氣強，指採取積極措施預防可能發生的一切攻擊或危險。guard普通用詞，指保持警惕以防可能的攻擊或傷害。shield語氣比protect強，但側重防止迫在眉睫的攻擊或傷害。shelter通常指尋找安全地方躲避風雨或使人免遭危害。harbour貶義詞，指隱匿或非法保護、窩藏。
三、相關短語：
guard of honor
n.儀隊,儀仗隊
off guard
下崗,不警惕,未提防
old guard
守舊派,保守分子
on guard
值班,站崗;提防,警惕
on one's guard
adv.警惕
shin guard
n.(足球,冰球等運動員戴的) 護脛
splash guard
n. 擋泥板
stand guard
站崗,放哨,值勤,保衛
watch guard
n.掛錶鏈,錶帶
guard's van
n.列車員車廂
bumper guard
緩衝保護器
face guard
面具，防護面具
四、參考例句：
You guard our borders.
你們保衛着我們的邊境。
Stalwart policemen stood guard outside.
強壯的警察在外面警戒。
The guard deserted his post.
衛兵擅自離開了他的崗位。
Be on your guard, I conjure you.
千萬要警惕呀，我懇求你。
Be on your guard against thieves.
要堤防盜賊。
A guard was posted outside the building.
建築物外設了一名警衛。
He was a guard of gigantic strength.
他是個具有巨人般力氣的衛士。
The soldier volunteered for guard duty.
那個戰士自告奮勇去站崗。
Be on your guard against pickpockets.
謹防扒手。
Troops were detailed to guard the frontiers.
派遣部隊去防守邊界。
