1. in most cases; usually
在大多數情況下；通常
I mostly go to bed around 10 p.m.
我通常大約晚上十點上床睡覺。
The weather here is mostly sunny.
這裡的天氣大多是晴朗的。
Mostly Meaning（定義、用法、例句與發音）
mostly
adverb
快速理解
What does "Mostly" mean?What are 2-3 core uses of "Mostly"?
「mostly」表示某事物在大部分情況下、大部分程度上或大部分組成上如此。
- 1
主要地；大部分地
EN: The weather is mostly sunny this week.
翻譯: 這週的天氣大部分是晴朗的。
- 2
通常；一般
EN: I mostly go to bed before midnight.
翻譯: 我通常會在午夜前就寢。
- 3
多半；主要構成
EN: The audience was mostly teenagers.
翻譯: 觀眾多半是青少年。
小提醒：注意「mostly」和「almost」的區別。「mostly」強調「大部分、通常」，而「almost」強調「幾乎、差一點就」。例如：「The work is mostly done.」（工作大部分完成了） vs 「The work is almost done.」（工作快完成了）。
發音（How to Pronounce "Mostly" in English）
How to pronounce "Mostly" in English?"Mostly" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Mostly" from YouTube Videos
Elon Musk On How To Be Most Useful
Y Combinator
“do you think people that want to be useful today should get phds? um, mostly not.”
(1 out of 86)
Definitions（定義）
What are the definitions of "Mostly"?How does "Mostly" change by context?
2. for the greatest part; mainly
主要地；大部分地
The audience was mostly teenagers.
觀眾大部分是青少年。
The book is mostly about his travels in Asia.
這本書主要講述他在亞洲的旅行。
3. almost all; nearly
幾乎全部；差不多
The work is mostly finished.
這項工作差不多完成了。
She ate mostly all of the cake.
她幾乎把整個蛋糕都吃完了。
Grammar & Patterns（句型）
What are common sentence patterns for "Mostly"?How to make natural sentences with "Mostly"?
| Pattern | Meaning | Example |
|---|---|---|
| mostly + adjective | 大部分是…的 | The weather is mostly sunny. (天氣大部分是晴朗的。) |
| mostly + adverb | 主要地，通常 | He mostly works from home. (他主要在家工作。) |
| mostly + past participle | 大部分被… | The audience was mostly convinced by his argument. (觀眾大部分被他的論點說服了。) |
| be + mostly + noun phrase | 主要是… | The attendees were mostly students. (與會者主要是學生。) |
| mostly + prepositional phrase | 大部分在… | You can find him mostly in the library. (你大部分時間可以在圖書館找到他。) |
| mostly + clause (e.g., "what", "where") | 主要是… | That's mostly what we discussed. (那主要是我們討論的內容。) |
| for the most part | 在大多數情況下，基本上 | For the most part, the plan went smoothly. (基本上，計畫進行得很順利。) |
用法說明
How is "Mostly" different from similar structures?What usage mistakes are common with "Mostly"?
mostly + V-ing vs mostly + to V
- mostly + V-ing 通常用於描述一種經常性的、普遍的狀態或習慣，強調的是整體的傾向或主要情況。
- mostly + to V 則較常出現在說明特定目的、意圖或功能，尤其是在「be used to...」、「be designed to...」等結構之後。
- 在口語中，兩者有時可互換，但 mostly + V-ing 更側重於描述「在做什麼」，而 mostly + to V 則側重於「為了什麼目的」。 EN: The software is mostly used for editing photos. 翻譯: 這款軟體主要用於編輯照片。
EN:The software is mostly used to edit photos quickly.
翻譯:這款軟體主要用來快速編輯照片。
EN:In his free time, he's mostly watching documentaries.
翻譯:他閒暇時大多是在看紀錄片。
EN:This channel is mostly to provide educational content for students.
翻譯:這個頻道主要是為了向學生提供教育性內容。
總結建議
在描述主要活動或習慣時，使用 mostly + V-ing；在說明主要目的或功能時，則使用 mostly + to V。
易混淆對比
What is the difference between "Mostly" and similar words?How to choose "Mostly" vs alternatives?
mostly vs usually
「mostly」強調數量或比例上的「大部分」，而「usually」強調頻率上的「通常」。
mostly vs generally
「mostly」側重於「大部分」的量化概念，「generally」則側重於「普遍來說」的概括性陳述。
mostly vs almost
「mostly」意為「大部分地」，指比例高；「almost」意為「幾乎」，指接近完全但尚未達到。
口語用法
How is "Mostly" used in spoken English?What is the spoken vs formal difference for "Mostly"?
引述
在口語中，常用來引述或總結一個普遍的看法或情況，語氣較為隨意。 EN: Mostly, people just want to be heard. 翻譯: 大多數時候，人們只是希望有人傾聽。
EN:It's mostly sunny in the summer here.
翻譯:這裡夏天大多是晴天。
語氣強調
用來強調某個情況佔了絕大部分，帶有「幾乎全部」、「絕大多數」的意味，以加強語氣。 EN: I agree with you, mostly. 翻譯: 我同意你的看法，絕大部分都同意。
EN:The work is mostly done.
翻譯:這工作差不多完成了。
停頓填充
在思考或組織語句時，可作為短暫的停頓填充詞，類似「基本上」、「大概來說」。 EN: So, mostly... I think we should go ahead. 翻譯: 所以，基本上…我覺得我們應該繼續。
EN:His answer was, mostly, a yes.
翻譯:他的回答，大概來說，算是肯定的。
正式寫作注意：在正式或學術寫作中，應避免將 "mostly" 用作停頓填充詞，並建議使用更精確的詞彙（如 "primarily", "predominantly", "for the most part"）來替代口語中較模糊的用法。
常見短語
What common collocations use "Mostly"?What fixed phrases with "Mostly" should I remember?
mostly
adverb
主要地、大部分地、通常
mostly because
mostly + because + clause
主要是因為
consist mostly of
verb + mostly + of
主要由...組成
mostly true/false
mostly + adjective
大部分正確/錯誤
happen mostly
verb + mostly
主要發生在
but mostly
but mostly
但主要是
常見錯誤
What are common mistakes with "Mostly"?Which "Mostly" sentences look correct but are wrong?
×He is a mostly person.
✓He is mostly a kind person.
"mostly" 是副詞，不能直接修飾名詞 "person"。應修飾後面的形容詞、動詞或整個句子。
×I mostly agree with you.
✓I mostly agree with you.
此句文法正確，但學習者常誤解 "mostly" 為 "most"（最）的意思。"mostly" 意為「主要地、大部分地」，表示比例高，而非最高程度。
×She mostly eats vegetables for health.
✓She mostly eats vegetables for health.
此句文法正確，但學習者常將 "mostly" 錯誤地放在句尾。"mostly" 通常置於所修飾的動詞、形容詞之前，或助動詞與主要動詞之間，一般不置於句尾。
×This is the mostly interesting book I've ever read.
✓This is the most interesting book I've ever read.
在最高級形容詞（如 "most interesting"）中，應使用 "most"，而非副詞 "mostly"。"mostly" 不能用來構成形容詞的最高級形式。
×I exercise, mostly I run.
✓I exercise, mostly by running. / I mostly run when I exercise.
"mostly" 是副詞，不是連接詞（如 "mainly" 在某些結構中）。不能直接用來連接兩個獨立子句。需要調整句子結構，使其修飾動詞或介系詞片語。
詞形變化
What are the word forms of "Mostly"?What are tense/participle forms of "Mostly"?