it is necessary to restart the device in order for changes t

wanted

对于某人来说,做某事是必要的……

最简单的方法,前面全都加上un,即：
unfriendly,unhappy,unlucky,unnecessary

important是重要而necessary是需要.

keep的用法可以加doing也可以加形容词

well,depends on your situation.Some students will become more matured and well-grown after having some hard experiences; but some will consequently go the wrong track of their life.Since they feel like they have lots of pressures,they choose to degenerate,and finally ruin up life.

Furniture is necessary in daily life.
至于necessary baidu一下 你就知道

你的句子中主要是有许多不native(当地人的那种感觉）
下面是我帮你改的,但是还是参照了你的原文.对了,我改的是基于你的水平哈,不想它变得面目全非.
The way to relax ourself after exam(这里最好用名词,再加个从句） 你的句子其实也没错
it's necessary (for us).exam. (so) 注意,这里你这里没转折.ourself.
firstly, we can travel(to relax ourselves), (which is the good way)如果你学了从句可以用.
because we can (get attached with natural environment.) 与大自然相交流不是face the nature.这有点中式英语
we can (fishing)不是play with fish, .And we (can)前面用一般,后面也一般时态.
(secondly),.such as (listening to music) 应为你的东西修饰的是activity,所以,要用listening,如果不懂你可以去问老师.这叫非谓语动词做名词, 后面watch 也是一样的.
enjoy the time... 不是ourselves.享受我们自己.听起有点不对哈.
third,后面还行.
最后还行吧.

different pepole have different points!
Do you think fashion shows are necessary in todays's society?

unnecessary

正确答案为A、 for him to return
1、句子还原后为：It is necessary for him to return the book immediately.
be necessary for sb.to do sth.对于某人来说必要做某事
2、为什么B、that he returns不对
如果选B,将句子还原后为：It is necessary that he returns book immediately.看起来好像没有什么语法问题,实际上不然,因为：
当形容词为necessary,important,impossible,strange,natural,essential时,
在“It + be + 形容词或过去分词 + 主语从句”中,主语从句要用虚拟语气,也就是从句中的谓语动词应变为should return,而不是returns,should可以省略.
It is necessary that the problem (should) be discussed at once.
立刻讨论这个问题很有必要.
It is strange that he (should) have so many friends.
太奇怪了,他有那么多的朋友.
It has been decided that the meeting (should) be put off.
已经决定推迟这个会议

C
spend time doing something 固定搭配
难道每天必须要在卫生间花上一个小时的时间来梳你的头发吗?

两个句子用逗号隔开,没有连接词,可知前面的一个句子作为状语
独立主格做状语
其句本身有自己的逻辑主语,但无规范的主谓结构
逻辑主语everything 与动作应是被动关系的 所以 prepared的

是倒装
is 提到it之前了

英语口试必要吗?(Is a test of spoken English necessary?)
1.很多人认为有必要举行英语口语考试,理由是……
2.也有人持不同的意见,……
3.我的看法和打算
Opening sentence:A test of spoken English will be included as a component of College English Test.
参考范文：
A test of spoken English will be included as a component of College English Test.Many people consider it necessary to adopt such a test.For one thing,fluent speaking ability is badly needed in today’s society,a society that is experiencing reform and wider opening to the outside world.For another,in a more competitive society such as ours today,fluent spoken English usually becomes that ounce more advantage you have to beat your rivals in competing for a position having much appeal for both of you.All these point to the indispensability of a spoken English test.
Some people,however,take a different attitude.They regard the test as being unnecessary.Fluent spoken English,they argue,does not necessarily mean bringing a better job,for sometimes,opportunity plays a more important role.Furthermore,many people do not use spoken English at all in their work.
Personally speaking,I am really in favor of the test because it can encourage college students to try every means to improve their spoken English,which will benefit them forever.Thus I decide to make use of every opportunity to practise my spoken English,and surely it will do me much good.
评论：此篇文章又是讨论正反两种观点的论说文.第一段,阐述赞成口语考试的理由,社会的发展对大学生的英语水平提出了更高的要求,不但要写得好,还要说得流利.其次,一口流利的英语,毕业时就更能找一份报酬优惠的工作.第二段,对口语考试有人持不同意见：一方面,一口流利的英语未必能得到一份报酬优厚的工作；另一方面,在现实生活中,许多人的工作与口语无关.第三段,“我”的看法和打算.

因为做主语,所以have用动名词having的形式
因为不表示完成,所以后面无需加had

1、A
2、D
3、D
4、A
5、C

柴米油盐酱醋茶是生活必备

有必要么?

如果没有语境是可以的.用which时可能默认的含义是有一个选择范围,比如在A和B之间进行选择.而What默认的可选范围比较大.
be necessary for 后面要加名词 译为“对...是有必要”
be necessary to 后面要加动词 译为“有必要做...（某事）”

这是主语太长了,所以我们把他放在后面.前面用it 作形式主语代替后面真正的主语动词不定式.
另外,动词作主语时没有用原型的,要么是不定式,要么是ing

这句话意思是登机前在机场餐饮区买食物和零食或者从家里带一些食物和零食坐飞机,or 是或者的意思,一种选择是登机前在机场买食物上飞机,一种是从家里带食物上飞机,It may be necessary to do sth or to do sth,prior to （在……之前）doing sth 与or 无关.

A 至关重要的

where 在这里相当于 on the earth=on which (which 指代地球),它作地点状语
做这种题有个简单的方法直接看后面的liquid water,可以确定跟时间无关,所以排除when.
如果liquid water后可直接加前面的Earth就选which,如果需要加介词in,on等,则选where.

你不觉得他们非常有必要么?

这个不是指过去式 只是表示口气谦卑 “我可能不得不借你点钱” 表示十分的不好意思. 比may更谦虚 小心

1.C 固定句型It's necessary to do
2.A 谚语：金窝,银窝,不如自己的狗窝
3.C at a time每次 at one time曾经 at all times总是 at that time那 时
4.D other只能用于两者之间,一般one...the other,be suitable for适于.

B
固定搭配,it is necessary that (should) do ..,should必须省略

D.

有时候沉住气是很有必要的

1.necessary (it作形式宾语,necessary宾补,to have……宾语）
2.wonderful (adj.)
3.seated (be seated:使就座）
4.hundreds
4.southern (adj.) north（名词作定语 ）

首先 it necessary for us to practise speaking English 在句中成分 宾语从句
it 是形式宾语 真正的宾语是practise speaking English
it 指代的就是practise speaking English
而 speak 加ing 则是因为 practise 是动词 固定短语 practise doing sthing

译文如下：当水污染指数超过限制值时将水转型来提高水质量是很有必要的.

复合句,前面的When walking on campus是状语从句 ＝ When you are walking on campus

答案：A
it 在此作形式宾语,真正的宾语是后面的动词不定式 to keep the balance of nature,而其他的几个选项都不能作形式主语或者形式宾语,所以排除.

contaminated,被污染的.
规范的科技文献中polluted一词很少用,通常用作名词,如air pollution control,water pollution management 等.
仅供参考.
祝好

因为这个句子中在for the individual and society后面没有用“need”的必要.在这里放这个词不仅语法解释不通,语义上也没有逻辑性.即便是你把这个句子安排得“合乎语法”了,语义上仍然与前面的 necessary for.重复. ...

选A
理解为 It is very necessary that we make the most of our natural resources.

A.too much
表示太多.

1.A story needs some basic ideas.
2.Let's decide the type of characters and their voices in the second stage.
3.He is always forgetful

C

应该是unsatisfied,是“不满意的”的意思.原句的意思是：一个好的故事不一定要有一个皆大欢喜的结局,但是一定不能让读者不满意.

for you to It is necessary for you to have support teams to bring water and drinks. 前面的介词应用for,而不是of 在这类题中,判断介词是用of还是用for,主要取决于介词前面的形容词,如果这个形容词是修饰介词后...

保护树木免受严寒是很有必要的

ing an umbrella with you is necessary
feed the goldfish too much is not a good idea

C drinks---drink

这里用should drink, should可以省略。

C."s"读做【es】读音以元音开头.
不明白的再问哟,请及时采纳,多谢!

对于那些家住地震多发地区的人们来说,在地震来临前做好充分准备是十分必要的.

1.to care
2.does begin
3.will rain
4.Hurry will rain
5.aren't watching are having
6.well
7.happy
1.B
2.B