插入语如何使用？插入语在一个句子中间插入一个成分，它不作句子的任何成分，也不和句子的任何成分发生结构关系，同时既不起连接作用，也不表示语气，这个成分是插入语。
插入语的特征是：去掉插入语后，句子的语法结构和语义结构仍是完整的。
插入语是说话者对所表达意思的补充、强调、解释，或者表明说话的态度，其位置灵活，常常用逗号或破折号与其他成分隔开，并且在语法上不影响其他成分。
陈述句、介词短语、不定式、分词、分句、副词或形容词都可以用作插入语。
1.形容词(短语)作插入语。
能用作插入语的形容词(短语)常见的有：
wonderful(精彩的), excellent(极好的), sure enough(果然), worse still(更糟糕的是), true(真的), strange to say(说也奇怪), needless to say(不用说), most important of all(最为重要的是)等，表现了说话人的情感或态度等。
《剑桥雅思真题6》Test 3 Listening Section 4
Sure enough, there's ample evidence of this at coastal sites.
果然，在沿海地区有充足的证据证明这一点。
《剑桥雅思真题5》Test 3 Passage 1
Most important of all, the traditional measures of ‘risk', such as parents' age and education, or whether they were a single parent, bore little or no relationship to the measures of achievement and language development.
最重要的是，传统的风险衡量标准，如父母的年龄和教育程度，或者他们是否是单亲，与成就和语言发展的衡量标准几乎没有关系。
2.副词作插入语。
常作插入语的副词有：certainly(当然), surely(无疑), indeed(的确),however(然而), unfortunately(不幸运的是), luckily(幸运的是),probably(大概), personally(就个人来讲), otherwise(否则), generally(通常), honestly(老实说), besides(此外), perhaps(也许), frankly(坦白说)等。
《剑桥雅思真题7》Test 4 Passage 1
Indeed, the experiments have left many specialists unconvinced.
事实上，许多专家对这些实验并不信服。
《剑桥雅思真题5》Test 4 Listening Section 1
Certainly , your spoken English is advanced.
当然，你的英语口语很好。
《剑桥雅思真题7》Test 4 Passage 2
With the onset of statehood, however, the State of Alaska took over management of its own fisheries.
然而，随着国家地位的确立，阿拉斯加州接管了自己的渔业管理。
《剑桥雅思真题8》Test 4 Passage 3
Unfortunately, these methods are not always compatible.
不幸的是，这些方法并不总是兼容的。
《剑桥雅思真题9》Test 1 Passage 1
Luckily, Perkin's scientific training and nature prompted him to investigate the substance further.
幸运的是，珀金的科学训练和本性促使他进一步研究这种物质。
《剑桥雅思真题8》Test B Writing Task 2
Personally, I think that there are advantages to both systems.
就我个人而言，我认为这两个系统都有优点。
《剑桥雅思真题6》Test 4 Listening Section 1
Otherwise, you can take the bus which runs every half an hour from the station.
否则，你可以从车站乘每半小时一班的公共汽车。
《剑桥雅思真题7》Test A Section 2
Generally, employees pick up the pay checks in their department.
一般来说，员工在他们的部门领取工资支票。
《剑桥雅思真题2》Test 3 Passage 2
Besides, global car use is increasing at a faster rate than the improvement in emissions and fuel efficiency which technology is now making possible.
此外，全球汽车使用量的增长速度快于技术进步所带来的排放和燃油效率的提高。
3.介词短语用作插入语。
常作插入语的介词短语有：in fact(事实上), in one's opinion(在某人看来),of course(当然), above all/first of all(首先), by the way(顺便), in general(一般而言), in a word(总之), in other words(换句话说), as a result(结果是), for example(比如), on the contrary(正相反), on the other hand(另一方面), to one's surprise(使……吃惊的是), in short(总之), as a matter of fact(事实上), in conclusion(总之), in brief(总之),after all(毕竟)等。
《剑桥雅思真题8》Test B Section 3
After all, bilingual Turkish families in Germany were normal and Susanne had read all the books she could find on the subject.
毕竟，在德国，会讲两种语言的土耳其家庭是正常的，苏珊读过所有她能找到的关于这个主题的书。
《剑桥雅思真题7》Test B Writing Task2
In conclusion, I think there may be some reasons why entertainment stars earn high salaries but overall I agree that they are overpaid.
综上所述，我认为娱乐明星的高薪可能有一些原因，但总的来说，我同意他们的薪水过高。
《剑桥雅思真题8》Test 3 Listening Section 4
It's a less glamorous activity than pure innovation, but it actually happens more often, as a matter of fact.
与纯粹的创新相比，这是一项不那么吸引人的活动，但事实上，它发生得更频繁。
《剑桥雅思真题7》Test 2 Passage 1
In fact, in some pagoda designs, it does not even rest on the ground.
事实上，在一些宝塔的设计中，它甚至不接触在地面上。
《剑桥雅思真题7》Test 4 Writing Task2
What, in your opinion, should be the main function of a university?
你认为大学的主要功能是什么?
《剑桥雅思真题10》Test A Section 2
When you have set up your own business, you must, of course, start selling your goods or services.
当你建立了自己的企业，你当然必须开始销售你的商品或服务。
《剑桥雅思真题12》Test 1 Passage 1
Cork production is, above all, an exercise in patience.
首先，软木生产是一种耐心练习。
《剑桥雅思真题7》Test 2 Listening Section 4
By the way, he uses ‘handedness'.
顺便说一下，他有偏手性。
《剑桥雅思真题7》Test 4 Passage 3
In general, it is plausible to suppose that we should prefer peace and quiet to noise.
一般来说，似乎可以认为我们应该更喜欢和平与安静而不是噪音。
《剑桥雅思真题8》Test 3 Passage 2
In other words, when, for instance, information is collated about early illnesses, methods of upbringing, schooling, etc.
换句话说，例如，在整理有关早期疾病、教养方法、学校教育等方面的信息时。
《剑桥雅思真题7》Test 1 Passage 2
As a result, the pressure to build new water infrastructures has diminished over the past two decades.
因此，在过去20年里，建造新的供水基础设施的压力已经减少。
《剑桥雅思真题2》Test 4 Passage 2
On the contrary, a great deal of empirical evidence shows that pictures interfere in a damaging way with all aspects of learning to read.
相反，大量的经验证据表明，图片以一种破坏性的方式干扰了学习阅读的各个方面。
《剑桥雅思真题7》Test A Section 3
Rowena, on the other hand, has phenomenal concentration; some might even consider her obsessive.
另一方面，罗威娜有着惊人的专注力;有些人甚至认为她有强迫症。
《剑桥雅思真题10》Test B Section 3
To his great surprise, the image then became much clearer when it was stored in a cupboard.
令他大为惊讶的是，当这幅画被放在柜子里的时候，它变得清晰多了。
4.不定式作插入语。
常作插入语的不定式有：to be frank(坦率地说), to tell the truth(老实说),to be sure(当然), to make matters worse(更糟的是), to sum up(总之),to start with(首先), to begin with(首先)等。
《剑桥雅思真题5》Test 1 Listening Section 4
To start with, it is a fact that throughout the world, women are likely to live many years longer than men, so they need money to support them during this time.
首先，在全世界范围内，女性可能比男性寿命长许多年，这是一个事实，所以在这段时间里，她们需要钱来养活自己。
《剑桥雅思真题2》Test 3 Listening Section 2
To be frank , they tell you very little else.
坦率地说，他们很少告诉你其他的事情。
《剑桥雅思真题10》Test 1 Listening Section 4
To make matters worse, the number of salmon in those streams is declining because there is no legal limit on fishing at the moment.
更糟糕的是，由于目前没有法律限制捕鱼，这些河流中的鲑鱼数量正在下降。
《剑桥雅思真题10》Test 2 Passage 2
To sum up, learning is affected by emotions of both the individual and significant others.
总之，学习是受个人和重要他人的情感影响的。
《剑桥雅思真题4》Test 2 Listening Section 3
Maybe I'd better go through the article again, just to be sure.
也许我最好再看一遍这篇文章，只是为了确认一下。
5.V-ing分词短语作插入语。
常作插入语的V-ing分词短语有：generally speaking(一般来讲), generally considering(一般认为), strictly speaking(严格地说), judging from/by(根据……来判断)等。
《剑桥雅思真题11》Test 1 Passage 3
Generally speaking, those who are most cautious about geo-engineering are the scientists involved in the research.
一般来说，那些对地球工程最谨慎的人是参与这项研究的科学家。
《剑桥雅思真题2》Test 4 Passage 3
A genetic problem cannot be treated with drugs because strictly speaking, it is not a disease.
基因问题不能用药物治疗，因为严格来说，它不是一种疾病。
《剑桥雅思真题4》Test 1 Passage 2
Judging from the way it watches and tracks airborne flying fish, it can apparently see fairly well through the air-water interface as well.
从它观察和跟踪空中飞鱼的方式来看，它显然可以通过空气和水的界面看得相当清楚。
6.句子(陈述句和一般疑问句)作插入语。
用作插入语的句子有：I am sure(我可以肯定地说), I think(我认为), I hope(我希望), I'm afraid(恐怕), I believe(我相信), I know(我知道), I suppose(我推测), what's more(而且), what's worse(更糟的是), what is important/serious(重要/严重的是), you see(你清楚), that is(to say)(也就是说), as we all know(众所周知), as I see(在我看来), it is said(据说), it seems(看来是), believe it or not(信不信由你), it turns out(事实证明)等。
《剑桥雅思真题7》Test 1 Passage 1
The sensation of facial vision, it turns out, really goes in through the ears.
面部视觉的感觉实际上是通过耳朵进入的。
《剑桥雅思真题4》Test 2 Passage 3
Playfulness, it seems, is common only among mammals.
嬉闹，似乎只有在哺乳动物中才常见。
《剑桥雅思真题5》Test 1 Listening Section 3
You see, my office have agreed to pay the cost of the course itself.
你知道，我的办公室已经同意支付课程本身的费用。
《剑桥雅思真题9》Test 2 Listening Section 2
I'm sure you're all keen to help with the practical task of looking after the park, so on Saturday you can join a working party.
我相信你们都很乐意帮助完成照看公园的实际任务，所以星期六你们可以参加一个工作小组。
《剑桥雅思真题5》Test 2 Listening Section 3
I think, when we were being shown how to edit the film, we had to follow the instructions.
我想，当我们被展示如何编辑这部电影时，我们必须按照指导去做。
《剑桥雅思真题7》Test 3 Listening Section 1
That sounds like fun but unfortunately I have evening lectures—so that's not possible, I'm afraid.
这听起来很有趣，但不幸的是，我有晚上的课——所以，恐怕这是不可能的。
《剑桥雅思真题5》Test 2 Listening Section 3
That is a very useful experience, I know.
我知道那是一次非常有用的经历。
《剑桥雅思真题11》Test 3 Listening Section 3
Well we'd better work out where we are on our project, I suppose.
嗯，我想我们最好确定一下我们在项目中的位置。
《剑桥雅思真题7》Test 1 Listening Section 2
What's more, our sites are truly child-friendly, and, with this in mind, we operate a no-noise rule in the evenings.
更重要的是，我们的网站是真正的儿童友好的，并且，考虑到这一点，我们在晚上执行一个无噪声规则。
《剑桥雅思真题8》Test 1 Passage 2
Pilots must be instrument-rated, that is, skilled and licensed in aircraft instrumentation.
飞行员必须被仪表定级，也就是飞机仪表的技术和执照。
7.用标点符号引导插入语。
《剑桥雅思真题8》Test 1 Passage 3
These ranged from ‘sensory leakage'—where clues about the pictures accidentally reach the receiver—to outright fraud.
这些行为包括“感官泄露”，即有关照片的线索意外地传到了接收者手中，以及彻头彻尾的欺诈行为。
《剑桥雅思真题12》Test 1 Passage 1
Cork—the thick bark of the cork oak tree(Quercus saber)—is a remarkable material.
栓皮，即栓皮栎树厚实的树皮，是一种不同寻常的材料。
《剑桥雅思真题8》Test 3 Passage 2
What we appreciate, enjoy or marvel at in the works of genius or the achievements of prodigies are the manifestations of skills or abilities which are similar to, but so muchsuperior to, our own.
我们欣赏、珍惜或惊叹于天才的作品或神童的成就，是技能或能力的表现，它们与我们自己的技能或能力相似，但比我们自己更优越。
