useful的用法

作者&投稿:泷任 (若有异议请与网页底部的电邮联系)
be useful to和be useful for的区别~

这两个词的区别我知道,"Be useful to"强调对特定受益者的好处,通常用作形容词后的介词短语;而"Be useful for"侧重于描述事物的功能或特性,指出其适用性,通常用作形容词后的介词短语。先来了解下关于它们的基础知识吧!

下面就来说说关于它们的区别吧!
1、对受益者的关注点不同
"Be useful to"强调某事对特定的受益者来说具有实用价值或帮助。它着重于强调事物对某人的好处。而"Be useful for"则侧重于描述某事物的功能或特性,指出它能够用于实现某个目的或满足某种需求。
例句:
This new software is very useful to me in managing my tasks.(这个新软件对我来说在管理任务方面非常有用。)
This tool is useful for repairing small household appliances.(这个工具用于修理小型家用电器很有用。)
2、句式结构不同
"Be useful to"常常用作形容词后的介词短语,后面跟随受益者。"Be useful for"则通常用作形容词后的介词短语,后面跟随描述实用性的目的或用途。
例句:
The guidebook was very useful to us during our trip.(这本指南书在我们旅行期间对我们非常有用。)
This tool is useful for fixing bicycles.(这个工具用于修理自行车很有用。)
3、重点不同
"Be useful to"更强调对特定个体或群体的实际帮助或价值。"Be useful for"更侧重于指出某物具有一般性的实用性或适用性。
例句:
The new smartphone is useful to people who need to stay connected on the go.(这款新智能手机对需要随时保持联系的人来说很有用。)
This bookshelf is useful for organizing books and other items.(这个书架用于整理书籍和其他物品很有用。)

help – helpful – helpfully
use – useful – usefully
helpfully
['hɛlpfəli] 全球发音 跟读 口语练习
adv. 有益地;有用地
useful
英 ['juːsfʊl; -f(ə)l] 美 ['jusfl] 全球发音 跟读 口语练习
adj. 有用的,有益的;有帮助的
[ 比较级 more useful 最高级 most useful ]
helpful
[英][ˈhelpfl][美][ˈhɛlpfəl]
adj.
给予帮助的,有益的; 愿意帮忙的;
Her advice has frequently been less than wholly helpful.
她的建议往往毫无帮助。
helpfully
[英]['helpfəlɪ][美]['helpfəlɪ]
adv.
有益地,有用地;
He gave his name and then helpfully spelt it.
他说出自己的名字,然后又热心地将它拼了出来。

useless 和 useful是两个意思相反的单词
useless
a.
1. 无用的;无价值的
The blunt knife is useless.
这把钝刀毫无用处。
2. 无效的;无益的
I realized it was useless to reason with him.
我知道和他说理是毫无意义的。
3. 【口】(人)无能的,没有用的
I was useless at maths.
当时我的数学差极了。
useful
a.
1. 有用的;有益的;有帮助的[(+to/for/in)]
She gave us some useful information.
她给了我们一些很有用的信息。

A
A
都选A be useful for sb对某人来说非常有用

都选A

1.A
2.B
从字面意思理解就行了


we can () ()ueseful kownledge from the newpaper
get some

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