must be on guardとは 意味・読み方・使い方

I must be on my guard against you, for you have such a quick eye.発音を聞く 例文帳に追加

君は目が早いから油断がならぬ - 斎藤和英大辞典

Be careful not to get into this bad habit―Beware of this habit!―Guard against this habit!―Be on your guard against this habit!―Be cautious of this habit―（他動詞構文にすれば）―I must caution you against the habit―warn you against this habit.発音を聞く 例文帳に追加

この悪習に陥らぬよう注意すべし - 斎藤和英大辞典

Beware lest you should fall into this error!―Beware of this error!―Guard against this error!―Caution yourself against this error!―Be watchful against this error!―Take heed of this error!―（他動詞構文にすれば）―I must warn you against this error―caution you against this error―put you on your guard against this error.発音を聞く 例文帳に追加

この誤りに陥らぬように用心せよ - 斎藤和英大辞典

You must be on your guard, lest you should incur suspicion.発音を聞く 例文帳に追加

人に悟られると大変だから油断をするな - 斎藤和英大辞典

You must be on your guard against him, for he is apt to use a knife.発音を聞く 例文帳に追加

あの男は刃物三昧に及ぶから油断がならぬ - 斎藤和英大辞典

You must guard against him―Be on your guard against him!―Beware of him!―（他動詞構文にすれば）―I warn you against him―I caution you against him.発音を聞く 例文帳に追加

（あの男は悪い奴だから）彼を警戒せよ - 斎藤和英大辞典

You must be on your guard against him, for he will use a knife.発音を聞く 例文帳に追加

あの男は刃物ざんまいに及ぶから油断がならぬ - 斎藤和英大辞典

One must always be on one's guard in the world these days.発音を聞く 例文帳に追加

近ごろの世の中ときたら油断も隙もあったものではない. - 研究社 新和英中辞典