我要删除英语中的插入语，它的前后逗号要全删吗

Answer 1

删除英语中的插入语，它前后的逗号是否要删除需视句子结构而定。

所谓插入语，就是指插在句子中间，对句子起补充或附加的说明的成分。一般说来，插入语与句中其他部分没有语法上的联系，若将其去掉，句子结构仍然完整。插入语在句中主要起解释、说明、总结等作用，此外还可用于表示说话者的态度和看法、起强调作用、引起别方的注意、转移话题、承上启下等。

例句分析：括号内为原句删除插入语后的句子。
一、形容词（短语）作插入语
Sure enough, she was there. 果然她在那里。（She was there.）
Strange to say, he is still ignorant of it. 说也奇怪，他还不知道这件事。（He is still ignorant of it.）
Most important of all, these activities have strengthened their ties with the working people. 最重要的是，这些活动加强了他们和劳动人民的联系。（These activities have strengthened their ties with the working people.）
二、副词（短语）作插入语
I’m seeing him in May一or rather early June. 我5月份见他——更确切地说是在6月初。（I’m seeing him in May.）
We must be back before midnight；otherwise we’ll be locked out. 我们必须在午夜之前赶回去，否则我们就会被锁在门外。(We must be back before midnight.)
三、介词短语作插入语
He doesn’t mind. In fact, he is very pleased. 他不介意，实际上他很高兴。(He doesn’t mind. He is very pleased.)
By the way, do you know where Mary lives? 顺便问一下，你知道玛丽住在哪里吗？(Do you know where Mary lives?)
The boy is not foolish. On the contrary, I think he is very clever. 这孩子不愚蠢，相反我认为他很聪明。(The boy is not foolish. I think he is very clever.)
A lot of us want to leave now—Bill, for example [=for example, Bill]. 我们很多人现在都想走——比如，比尔就是一例。(A lot of us want to leave now.)
四、v-ing分词（短语）作插入语
Generally speaking children like to watch television. 一般说来，小孩子喜欢看电视。(Children like to watch television.)
Judging from [by] his accent, he may be from the south. 听他的口音，他可能是南方人。(He may be from the south.)
五、不定式短语作插入语
To begin with, I do not like its colour. 首先，我不喜欢它的颜色。(I do not like its colour.)
To tell the truth, the film was a great disappointment to me. 说实在的，那部影片使我大为失望。(The film was a great disappointment to me.)
To make a long story short, we agreed to disagree. 长话短说，我们同意各自保留不同的看法。(We agreed to disagree.)
六、句子（陈述句和一般疑问句等）作插入语
Believe it or not, they got married soon. 信不信由你，他们不久就结婚了。(They got married soon.)
He learns easily, and what’s more, he remembers what he has learnt. 他学习起来很容易，而且他所学习过的都记得住。(He learns easily, and he remembers what he has learnt.)
He didn’t go, that’s to say, it’s not recorded that he did. 他没去，换句话说，他去了这个事实无案可查。(He didn’t go. It’s not recorded that he did.)

Answer 2

是的，应该都删去。
前后两个逗号是随着插入语而来的，插入语的作用是“补充说明”，删掉它就不用两个逗号了。

举个例子：
Doufu, the Chinese name for bean curd, has been made in China for about 2,000 years.
删掉插入语后的句子：
Doufu has been made in China for about 2,000 years.

Answer 3

插入语没有特别的规定，一般不在句中做成分，在句子中间可能会用逗号隔开。所以插入语可放在谓语动词之后。