by和for的用法

by和for的用法
一、“by”的用法
（一）基本用法
1. “by”可用于表示动作的执行者，在被动语态中使用，意思是“被；由”。

例如：This book was written by J.K. Rowling.（这本书是J.K.罗琳写的。

）
2. 表示方式、方法或手段，可译为“通过；靠；用”。

I go to school by bike.（我骑自行车去上学。

）
3. 表示时间，意为“到……为止；不迟于”。

I will finish my work by 5 o'clock.（我将在5点之前完成我的工作。

）
4. 表示增减程度，意为“相差”。

The price has increased by 10%.（价格已经上涨了10%。

）
（二）固定搭配
1. “by oneself”，意为“独自；单独”。

I can do it by myself.（我自己能做这件事。

）
2. “by the way”，表示“顺便说一下”。

By the way, have you seen Tom lately?（顺便问一下，你最近见过汤姆吗？）
3. “by accident”，意为“偶然；意外地”。

I met her by accident in the supermarket.（我在超市意外地遇见了她。

）
4. “by far”，用于强调程度，可译为“到目前为止；……得多”。

This is by far the best movie I've ever seen.（这是我看过的最好的电影，远远超过其他的。

）
5. “by hand”，表示“用手；手工”。

This sweater was made by hand.（这件毛衣是手工制作的。

）
二、“for”的用法
（一）基本用法
1. 表示目的，意为“为了；用于”。

I study hard for my future.（我为了我的未来努力学习。

）
2. 表示对象，意为“给；对；供”。

This gift is for you.（这个礼物是给你的。

）
3. 表示原因，意为“因为；由于”。

Thank you for your help.（谢谢你的帮助。

）
4. 表示一段时间，意为“达；计”。

I have lived here for five years.（我已经在这里住了五年了。

）
（二）固定搭配
1. “look for”，意为“寻找”。

What are you looking for?（你在找什么？）
2. “wait for”，表示“等待”。

I will wait for you at the bus stop.（我将在公共汽车站等你。

）
3. “care for”，可译为“照顾；喜欢”。

Do you care for some tea?（你想喝点茶吗？）也可用于I don't care for horror movies.（我不喜欢恐怖电影。

）
4. “stand for”，意为“代表；象征”。

The dove stands for peace.（鸽子象征和平。

）
5. “pay for”，表示“付款；赔偿”。

I paid for the book yesterday.（我昨天付了这本书的钱。

）
双语例句
一、关于“by”的例句
1. “By the time he arrived, the party was already over. Oh, how unlucky he was! It was like a balloon that had burst just before he could touch it.”（当他到达的时候，聚会已经结束了。

哦，他多倒霉啊！就像一个气球在他能碰到之前就爆了。

）
2. “She made a living by selling her paintings. Isn't it amazing? It's like she turned her passion into a key that opened the door to her livelihood.”（她靠卖自己的画谋生。

是不是很神奇？就好像她把自己的热情变成了一把打开生计之门的钥匙。

）
3. “The building was destroyed by the fire. Oh, what a pity! It was like a once - beautiful flower that was suddenly withered by a storm.”（这座建筑物被大火烧毁了。

哦，真可惜！就像一朵曾经美丽的花突然被暴风雨摧残了。

）
4. “He learned English by listening to English songs. Smart move, right? It's like he found a secret path to the world of English.”（他通过听英文歌学习英语。

很聪明的做法，对吧？就好像他找到了通往英语世界的秘密通道。

）
5. “By working hard every day, he finally achieved his goal. Hooray for him! It was like climbing a high mountain step by step until reaching the peak.”（通过每天努力工作，他终于实现了自己的目标。

为他欢呼！就像一步一步地攀登高山直到到达顶峰。

）
6. “This poem wasposed by a famous poet. Wow, it must be great! It's like a precious jewel crafted by a master jeweler.”（这首诗是由一位著名诗人创作的。

哇，那一定很棒！就像一颗由珠宝大师制作的珍贵珠宝。

）
7. “The news was spread by word of mouth. Can you believe it? It's like a small seed that grew into a big tree just through people's chatter.”（这个消息是口口相传的。

你能相信吗？就像一颗小种子仅仅通过人们的闲聊就长成了一棵大树。

）
8. “The mistake was made by him. Oh, he should be more careful! It's like he took a wrong turn on a well - marked road.”（这个错误是他犯的。

哦，他应该更小心些！就像他在一条标记清楚的路上拐错了弯。

）
9. “I recognized her by her voice. How strange is that? It's like I could identify a bird just by its song in a forest full of different birds.”（我通过她的声音认出了她。

多奇怪啊？就像我能在满是不同鸟儿的森林里仅仅通过歌声就认出一只鸟。

）
10. “By reading books, we can gain a lot of knowledge. Awesome, right? It's like opening countless treasure chests filled with wisdom.”（通过读书，我们能获得很多知识。

很棒，对吧？就像打开无数装满智慧的宝箱。

）
二、关于“for”的例句
1. “I bought some flowers for my mother. She'll be so happy! It's like bringing a ray of sunshine into her day.”（我给我妈妈买了一些花。

她会很开心的！就像给她的一天带来一缕阳光。

）
2. “He prepared a big dinner for his friends. How generous! It's like building a warm shelter for the people he cares about in the cold winter.”（他为他的朋友们准备了一顿丰盛的晚餐。

多慷慨啊！就像在寒冷的冬天为他在乎的人建造一个温暖的庇护所。

）
3. “She left early for the airport. She must be in a hurry. It's like
a bird flying quickly towards its nest when it senses danger.”（她早早出发去机场了。

她一定很匆忙。

就像一只鸟在感觉到危险时迅速飞向它的巢穴。

）
4. “We are waiting for the bus. How boring! It's like sitting in a desert waiting for an oasis that might nevere.”（我们正在等公共汽车。

好无聊啊！就像坐在沙漠里等待一个可能永远不会出现的绿洲。

）
5. “He apologized for his rudeness. Well, at least he's honest. It's like a naughty child admitting his mistake after doing something wrong.”（他为他的无礼道歉。

嗯，至少他很诚实。

就像一个淘气的孩子在做错事之后承认错误。

）
6. “I'm saving money for a new laptop. It's not easy. It's like a little squirrel collecting nuts for the long winter.”（我正在存钱买一台新笔记本电脑。

这不容易。

就像一只小松鼠为漫长的冬天收集坚果。

）
7. “They are looking for a lost dog. Poor dog! It's like searching for a precious pearl in a vast ocean.”（他们正在寻找一只走失的狗。

可怜的狗！就像在浩瀚的海洋里寻找一颗珍贵的珍珠。

）
8. “I made a cake for the party. Yummy! It's like creating a delicious little world for everyone to enjoy.”（我为聚会做了一个蛋糕。

好吃！就像创造一个美味的小世界供大家享受。

）
9. “He is famous for his paintings. How wonderful! It's like a star shining brightly in the art sky because of its un ique light.”（他以他的画而闻名。

多棒啊！就像一颗星星因为它独特的光芒而在艺术的天空中闪耀。

）
10. “She studies hard for her dreams. Go, girl! It's like a brave sailor sailing towards the island of her dreams in a vast sea.”（她为了她的梦想努力学习。

加油，女孩！就像一个勇敢的水手在浩瀚的大海中朝着她梦想的岛屿航行。

）。