Knowing
“Knowing” 是 know 的现在分词，指了解事实或掌握技能，如 “Knowing the rules saves time.”（了解规则能省时间。）作形容词时带“心照不宣”的意味，如 “a knowing smile”（会意的一笑）、“knowing look”（了然的眼神）。
- “Knowing basic first aid can help in an emergency.” (懂一点急救在紧急时很有用。)
- “She gave him a knowing glance when the topic came up.” (话题一提起，她朝他意味深长地看了一眼。)
- “He left without knowing whether they would agree.” (他不知道他们会不会同意就离开了。)
“Know” 来自古英语 cnawan，与 can（能够）在印欧语系中有远古联系；knowing 为 know + -ing。
“Knowing” 在 know 后加 -ing；know 为不规则动词（knew, known），无独立前缀。
knowing 作形容词常暗示双方共享秘密或默契；without knowing 表示“在不知情的情况下”。
- 原形: know
- 过去式: knew
- 过去分词: known
- 名词: knowledge
- 固定搭配: “knowing smile” (会意的笑), “knowing about” (了解)
know 是“知道”，knowing 就是“正在知道、懂得，或那种‘我都懂’的表情”。
“Knowing the address in advance, she arrived ten minutes early and avoided the crowd.” (她事先知道地址，早到十分钟，避开了人群。)