插入语通常是说话者对所表达意思的一种补充、强调、解释或者是说话人的一种态度。它的位置比较灵活，常常会用逗号或者破折号和其他部分隔开，下面是英语四级考试高级语法插入语，欢迎阅读。
插入语用法小结
例1 _____the more expensive the camera， the better its quality.
A.General speaking B.Speaking general
C.Generally speaking D.Speaking generally
小结：许多分词短语可以用作插入语，这样的分词短语有：strictly speaking(严格地说)，generallyconsidering(一般认为)， judging from……(根据……判断)等。
例2 Two middle-aged passengers fell into the sea. ____，neither of them could swim.
A.In fact B.Luckily C.Unfortunately D.Naturally
小结：常用作插入语的副词或副词短语有：indeed(的确)，surely(无疑)，however(然而)，frankly(坦率地说)，obviously(显然)，naturally(天然地)，luckily (happily) for sb.(算某人幸运)，fortunately(幸好)，strangely(奇怪)，briefly(简单地说)等。
例3 Your performance in the driving test didn’t reach the required standard，_____， youfailed.
A.in the end B.after all C.in other words D.at the same time
小结：常用作插入语的介词短语有：in conclusion(总之)，in a word(简而言之)，in short(简而言之)，in general(一般说来)，in a sense(在某种意义上)，in my view(在我看来)，in his opinion(按照他的看法)，in fact(事实上)，at first(首先)， in addition(此外)，of course(当然)，to my surprise(使我惊奇的)，to her regret(使她遗憾的)，for example(例如)等。
例4 It is so nice to hear from her._____，we last met more than thirty years ago.
A.What‘s more B.That is to say C.In other words D.Believe it or not
小结：用简短的句子结构作插入语，它们常置于句中或句末。这类简短的句子有：I am sure(我可以肯定地说)，I believe(我相信)，do you know(你知道吗)，you see(你明白)，I’m afraid(恐怕)，it is said(据说)，I suppose(我想)，what’s more(而且)，what’s worse(更糟糕的是)，that is(也就是说)，what isimportant(重要的是)等。
例5 _____ with you，I have no money to spare.
A.To be frank B.What’s more C.In addition D.However
小结：常用作插入语的不定式短语有：to be sure(无疑地)，to sum up(概括地说)，to tell thetruth(老实说)等。
插入语类型
1. 形容词或形容词短语作插入语
如：worst still, sure enough, strange, most important of all等.
Strange, there is nobody in the classroom.很奇怪,教室里没人.
2. 副词或副词短语作插入语
如：personally,honestly, fortunately,luckily, for us, though, besides, exactly, surely, frankly, still otherwise 等.
Luckily for you, I happen to have the key.你很运气,我正好带了钥匙.
3.介词短语作插入语
如：of course, in short, as a matter of fact, by the way, on the other hand, in my opinion, in conclusion等.
In short, we should not stop halfway.简言之,我们不能半途而废.
As a result, they suffered heavy losses.结果,他们受到了严重损失.
On the contrary, we should strengthen our ties with them.相反,我们还应加强和他们的联系.
4. 现在分词短语作插入语
如：generallyspeaking, judging from/ by …, talking of…, considering…等.
Considering his age, he did very well.从年龄考虑,他干得挺不错.
Frankly speaking, I don”t like the job.坦率地说,我不喜欢这份工作.
Talking of singing, will you go to the concert with me tonight?说到唱歌,你今晚愿意和我一块去音乐会吗?
5. 过去分词短语作插入语
Painted white, we like the house better.漆成白色,我们更喜欢这房子.
注意：之所以称它为插入语,是由于这种过去分词是独立的,没有逻辑主语.
插入语的应用
插入语(句)是说话者对所表达意思的补充、强调、解释或者说话的态度，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。例如：
I think， she has no feeling for your trouble. / She， I think， has no feeling for your trouble. 我想，她对你的遭遇无动于衷。
常见的插入语
插入语常以副词(副词短语)、形容词(形容词短语)、介词短语、非谓语动词短语等形式出现。
( 1 )常见的副词及短语： indeed， surely， however， obviously， frankly， naturally， luckily / happily for sb. certainly 等。
( 2 )常见的形容词及短语： funny， needless to say (不用说)， most important of all 等。
( 3 )常见的介词短语： by the way， in a few words / in sum / in short (简而言之)， in other words， in general， in one's opinion / judgment (按照某人的意见)， in fact， in the first place， of course， to one's knowledge / surprise / regret /satisfaction / mind / joy / disappointment 等。
( 4 )常见的现在分词短语： strictly / generally / honestly / personally / exactly / physically / speaking (严格地 / 一般地 / 坦诚地等)说; judging from / by …(根据……判断)等。
( 5 )常见的动词不定式短语： to be sure (无疑地)， to sum up (概括地说)， to tell the truth， to be honest， to be short， to conclude， to put it briefly， to put it in another way， to begin ( start ) with 等。
注意：上述单词或短语作插入语和状语时的区别。例如：
( 1 ) Frankly， he'd like to listen to music.
(副词作插入语，表示说话人的态度)
Here you should speak frankly.
(副词作状语)
( 2 ) True， your daughter is at home now. (形容词作插入语)
He came back， hungry and tired. (形容词作状语)
( 3 ) Judging from what he said， he does look down his elder brother. (现在分词作插入语，其主语不是句中的主语，只是说话者的附加说明)
Seeing from the window， he can see the lake. (现在分词作状语，逻辑主语是句中的主语 he )
( 4 ) To tell you the truth， he doesn't quite agree with this idea. (不定式作插入语，动作主体不是句中的主语，只是说话者的附加说明)
To buy the machine， he went to Beijing. (不定式作目的状语，逻辑主语是句中的主语 he )
