By 对比 Per

在英语中何时使用每一个，包含含义、语域和例句。

By

高频组块 A1 preposition

Per

前 1000（非常常见） A2 preposition

	By	Per
发音	🇬🇧 /["/baɪ/"]/ 🇺🇸 /["/baɪ/"]/	🇬🇧 /["/pə(r)//pɜː(r)/"]/ 🇺🇸 /["/pər//pɜːr/"]/
含义	near or beside something	每个或通过。 for each or by means of.
例句	The book was written by a famous author.	Rooms cost £50 per person, per night.
语域	中性	中性
常见程度	高频组块	前 1000（非常常见）
CEFR 等级	A1	A2
词性	preposition	preposition
搭配	by the way, by chance, by bus	per person, per day, per month, per the agreement
反义	away from, against	excluding, less than
常见错误	Confused with 'beside' — 'by' indicates proximity, 'beside' indicates being directly next to., Using 'by' to mean 'with' in contexts like 'by giving' instead of 'by using' or 'by means of'.	'Per' is sometimes confused with 'by', especially in informal contexts., 'Per' is often improperly used with plural nouns (e.g., 'per items' instead of 'per item')., Learners may forget to follow 'per' with a clear noun or amount.
用法说明	Used to indicate location, proximity, or the means of doing something. Often used in expressions of time, such as 'by Monday'. Avoid in formal writing when a more specific term can be used.	在给出费率或数量时使用'每'，例如'每小时'，或引用规则时，例如'根据您的请求'。这很正式，通常出现在书面英语中。 Use 'per' when giving rates or amounts, like 'per hour' or referencing a rule, like 'as per your request'. It’s formal and often appears in written English.

在真实片段中看它

The Pitt › S1 E1

30 cc's per kilo NS, a gram of ceftriaxone,

Per

常见问题：By 对比 Per

By和Per 有什么区别？

By: near or beside something Per: for each or by means of.

哪个更高级：By和Per？

Per 级别最高，在 CEFR 量表上为 A2。

By和Per 的 CEFR 等级相同吗？

在 CEFR 量表上：By: A1, Per: A2。

By和Per 是什么词性？

By: preposition, Per: preposition.

能各给一个例子吗？

By: The book was written by a famous author. Per: Rooms cost £50 per person, per night.

我可以互换使用 By和Per 吗？

不总是。By和Per 相关，有时可以互换，但在语域、常见程度和用法上不同，所以换用可能改变意思或语气。替换前先看看上面的区别。