Know the extent of
知道…的程度
🧩 词语组成解析
know
[no]
v. 知道;了解;认识;确信;
n. 知情;
the
[ðə]
art. 指已提到的人（物）;指说话人与听者已知的人（物）;用于独一无二的事物前;与形容词最高级和序数词连用;
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
That'll be thirty-six dollars, sir.
先生，车费是36元。
That's very nice of you. I guess I could use some help.
谢谢你的好意。我想我可能要一点帮助。
Later it crossed the Channel, riding smoothly over the waves, which presented no problem.
后来气垫船跨越英吉利海峡，平稳地在波浪上方行驶，波浪不再产生阻力。