Be sure of
其它 Other确信..., 肯定..., 对...有把握
🧩 词语组成解析
be
[bi]
v. 是;有，存在;做，成为;发生;
aux. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质;
sure
[ʃʊr]
adj. 确信的，确实的;有把握的;无疑的;一定的;
adv. 当然;确实地;无疑地;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
I'm about to go to the Post Office.
我正要去邮局。
Would you take them to my room?
能送到我的房间吗？
In man's early days, competition with other creatures must have been critical.
在人类早期，人类与其他生物的竞争一定是必不可少的。