prep. 在（某範圍或空間內的）某一點； 在（某物的形體或範圍）中； 在…內； 在…中； 進入；
adv. 在裏面； 在內； 進入； 在家裏； 在工作單位；
adj. 流行的； 時髦的；
[例句]He was in his car.
他坐在他的車裏。
[其他] 複數：ins
He lived in a small village.他過去住在一個小村子裏。
There are many stars in the sky. 空中有很多星星。
He is the tallest boy in the class.他是班裏個子最高的男孩。
She is always in a red blouse. 她總是穿着紅色襯衫。
in用作形容詞時的意思是“時髦的，流行的”。如：
What do you think will be the in colour this year? 你認為今年會流行什麼顏色？
She was surprised to find that miniskirts were in again. 她吃驚地發現超短裙又流行了。
Please write in English.請用英語寫。
I usually write in ink.我通常用墨水寫。
1、時髦的；流行的；受歡迎的
If you say that something is in, or is the in thing, you mean it is fashionable or popular.
e.g. A few years ago jogging was the in thing.。.
幾年前慢跑很流行。
e.g. It is the 'in' place to go for a quick drink after work.
那是一個“很受歡迎”的地方，工作之後可以去那兒喝上幾杯。
2、（與現在分詞連用）在…過程中
You use in with a present participle to indicate that when you do something, something else happens as a result.
e.g. In working with others, you find out more about yourself.
在與別人一起工作的過程中，你會進一步認識你自己。
3、肯定會經歷；註定遭受
If you say that someone is in for a shock or a surprise, you mean that they are going to experience it.
e.g. You might be in for a shock at the sheer hard work involved.。.
所做工作之艱辛可能會讓你大吃一驚。
e.g. When you venture outside, you are in for a surprise.
你外出探險時，定會遇上意想不到之事。
4、對…懷有仇恨；伺機報復…
If someone has it in for you, they dislike you and try to cause problems for you.
e.g. The other kids had it in for me.
其他的孩子對我懷恨在心。
5、捲入；參與
If you are in on something, you are involved in it or know about it.
e.g. I don't know. I wasn't in on that particular argument.。.
我不知道。我沒有參與那一爭論。
e.g. I'm going to let you in on a little secret.
我要向你透露一個小祕密。
6、與…友好相處；深得…的歡心
If you are in with a person or group, they like you and accept you, and are likely to help you.
7、因為；原因是
You use in that to introduce an explanation of a statement you have just made.
e.g. I'm lucky in that I've got four sisters.
我很幸運，因為我有4個姐姐。
1. 表示在某物的形體或範圍中，常譯作“在„„內，在„„中”。如：
She was still lying in bed at eight this morning. 今天早上八點鐘時她還在被窩裏躺着。 He was so hurried that he left the key in the lock. 他是如此地匆忙，竟把鑰匙忘在鎖裏面了。
2. 表示在某範圍或者空間內的某一點，常譯作“在„„內 / 裏面”。如：
The story happened in Sichuan Province.故事發生在四川省內。 You can see thousands of stars twinkling in the sky. 你會看到成千上萬顆星星在空中閃耀。
3. 表示穿着，戴着。如：
He was dressed in 本站… a dark suit at the funeral. 葬禮上他穿者一套深色西服。
The lady in white was in charge of the company. 那位白衣女子掌管着這家公司。
4. 用於描述具體的環境。如：
Now they are still standing in the rain. 他們現在還在雨中站着呢。 They could see nothing in the darkness. 黑暗中他們什麼也看不見。
5. 表示構成„„的整體 / 局部，包含„„在內。如： All the paintings in his collection were bought in Japan. 他收藏的所有的畫都是在日本買的。 We can clearly recognize his farther in him. 在他身上我們可以清楚地看到他父親的影子。
6. 表示在某段時間以後，後面接表示一段時間的名詞短語。如：
We’ll return in a few days. 我們幾天後就回來。
Mom will be well again in three weeks’ time. 媽媽三週後就會好的。
7. 表示某事的形式、形狀、安排或數量。如：
The students sat in rows on the playground. 學生們一排排地坐在操場上。
When new school year begins, the students come to school in twos and threes. 新學期開始了，學生們三三兩兩地來到學校。
8. 表示所處狀態或狀況或表示正在進行的動作。如：
I bought the car ten years ago, yet it is still in good condition. 我這輛車是十年前買的，現在仍然很好。
Please put the books in good order before you leave. 離開前把書整理好。
9. 表示所使用的語言、材料等。如：
Please write the composition in blue ink. 請用藍色墨水寫作文。
The old man is in good health. 這位老人身體很好。
His grandmother's life is in danger.他祖母生命危險。
The woman is in trouble.這位婦女處於困境中。
1、在（特定年、月等）；在…期間
If something happens in a particular year, month, or other period of time, it happens during that time.
e.g. 。.。that early spring day in April 1949.。.
1949 年4月早春的那一天
e.g. Export orders improved in the last month.。.
上個月出口訂單增加了。
2、在（某一情形、形勢）之中
If something happens in a particular situation, it happens while that situation is going on.
e.g. His father had been badly wounded in the last war.
在上次戰爭中，他的父親受了重傷。
e.g. 。.。issues you struggle with in your daily life.
你在日常生活中費力應對的問題
3、花費…時間
If you do something in a particular period of time, that is how long it takes you to do it.
e.g. He walked two hundred and sixty miles in eight days.
他在8天裏走了260英里的路。
4、在（一段時間）之後
If something will happen in a particular length of time, it will happen after that length of time.
e.g. I'll have some breakfast ready in a few minutes.。.
幾分鐘後我就能做點兒早飯出來。
e.g. They'll be back in six months.
6個月之後他們就會回來。
5、在（某一年齡段）之中
You use in to indicate roughly how old someone is. For example, if someone is in their fifties, they are between 50 and 59 years old.
e.g. 。.。young people in their twenties.
20多歲的。年輕人
e.g. 。.。Molly, a tall woman in her early sixties.
莫莉，一位60出頭的高個女士
at，in，on
這些前置詞在表示地點或時間時均含“在……”之意。
at 表地點時，指空間位置上的某一點；表時間時，指在時間上的某一時刻。
in 表地點時，指在某一立體空間範圍內；表時間時，指一段時間或與年、月、季節時間連用。
on 表地點時，指某物與另一物表面相接觸，或與某地方接壤等；表時間時，指在某一天或某一天的某個時間，尤指在星期幾。
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