Warn of
大学 College警告…,有…危险
🧩 词语组成解析
warn
[wɔrn]
vt. 警告，告诫;通知;预告;
vi. 发出警告;
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
Who do you think you are kidding.
你想要蒙谁呢？
Don't forget to invite him.
不要忘记邀请他。
Though a number of descents have been made, much of it still remains to be explored.
人们多次进入洞内探险，但至今尚有不少东西有待勘探。