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，但是在语法上不会影响其他成分。
插入语六大用法小结
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)，generally considering(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，_____， you failed.
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 is important(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 the truth(老实说)等。
例6 _____， he should have done such a thing.
A.Speaking general B.Strange to say C.Luckily D.Of course
小结：常用作插入语的形容词或其短语有：true(真的)，funny(真可笑)，needless to say(不用说)，most important of all(最为重要)，worse still(更糟糕的)，even better(更好)等。
Bill Gates, the billionaire Microsoft chairman without a single earned university degree, is by his success raising new doubts about the worth of the business world’s favorite academic title: the MBA (Master of Business Administration).
The problem, most participants in the debate acknowledge, is that the MBA has acquired an aura (光环) of future riches and power far beyond its actual importance and usefulness.
Opinion surveys in the world’s two largest economies—Japan and the United States—show consumerist definitions of success becoming ever more prevalent.
From:https://www.zgghmh.com/CET-4/20000369.asp