1 .最常见的插入语是下面这类，可放在句子末尾(a ) ，也可能在句子中间(b ) :
a . 插入语放在句子末尾
What will be a good beginning, I hope .
We'll have to book our tickets in advance, I'm afraid .
Her performance was wonderful, don't you think ?
We went there for our honeymoon, you know .
b . 插入语放在句子中间
The play, I think, was both interesting and instructive .
The trees there, it ssaid, are mostly, over thirty feet tall .
The first part, it seems, 15 better written than the other parts .
This, you know, is just my personal opinion .
What on earth are you fussing about ?
I wonder where the devil my slippers are ?
Who hell are you ?
We have been waiting for you for heaven knows how long .
(比较：Heavens knows how long we have been waiting for you . )
1 . Your family are quite well, I hope .
1 . I hope
2 . You don't mind my smoking, I suppose .
2 . I suppose
3 . It must cost a good deal to live here, don't you think ?
3 . don't you think
5 . Never trained that way, you see .
5 . you see
6 . Soon this would be behind us, she said .
6 . she said
7 . What's the meaning of all that, he asked .
7 . he asked
8 . Why did she do that, he wondered .
8 . he wondered
9 . I'm not much of a dancer, I'm afraid .
9 . I'm afraid
10 . That, I think, is the only answer for the question .
10 . I think
11 . Your explanation, I'm afaid, isn't very convincing .
11 . I'm afraid
12 . Your mother, I guess will be too busy to do that .
12 . I guess
1 . What on earth do you mean ?
1 . on earth
2 . What the devil happened ?
2 . the devil
3 . What the hell do you want ?
3 . the hell
4 . What, in the name of goodness, does all thismean ?
4 . in the name of goodness
5 . He got the news from nobody knows where .
5 . nobody knows
6 . The temple disappeared no one remembers when .
6 . no one remembers
7 . There were twelve people present, to beprecise .
7 . to beprecise