be useless for用法
发布网友
发布时间：2022-05-17 04:23
共2个回答
热心网友
时间：2023-09-21 00:34
it is useless for our healthy
be of 的用法
一、“be
of+抽象名词”,这时的of短语相当于这个名词的同根形容词,作为表语表示主语的性质或特征.of的意思是“具有、具备”等,常用于该结构的名词常见的有
of
use=useful；of nouse=useless；of importance=important等.如：
The matter is of
great importance.=The matter is very
important.
在形容词前常用very来修饰,在“of+抽象名词”结构中,名词前常用great, much等来修饰.再如It is of great
importance for college students to master a foreign language.
=It is very
important...对大学生来说,掌握一门外语是很重要的.
二、“be of+集合名词或其它类型的名词”,相当于belong
to或have.of表示归属关系或“有”的意思.如：The army and the people are of one family.
=The
army and the people belong to one family.军民是一家.
三、“be
of+物质名词”表示主语是“用某种材料构成或制作的”,相当于be made of或be built of.如：Our building was of
bricks.=Our building was built of bricks.
我们的楼房是砖建的.
四、be
of+(表示种类、颜色、年龄、形状、价格等）名词,多用来表示主语的特征.这类结构的主语可以是人,也可以是物,其中的of可以省略.常用于该结构的名词有：kind,age,colour,size,height,shape,type,way,price等.如：
Several
of the stamps were of the unusual kind.其中几张邮票是不同种类的.
The two boys are of the
same age.这两个男孩年龄相同.
She is of a different way of
thinking.她的思维方式与众不同.
These two kinds of article are of the same
price.这两种物品价格相同.
五、“be of+名词”也可以表示“来源、组成”.如：
He was of a poor peasant
family.他出身贫农家庭.
The committee is of seven people.该委员会由7人组成.
六、“be
of+形容词的最高级”相当于one of.如：
Mr.Wang is of the best teachers in our school.
=Mr
Wang is one of the best teachers in our school.
王老师是我们学校里最好的老师之一.
useless和useful的用法
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)*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。
2. 【俚】值得高度赞扬的;对...很熟练的[(+at)]
热心网友
时间：2023-09-21 00:35
it is useless for our healthy
———我的回答，如果你满意了，用你小手点一下采纳
