1.
I have to apologize for the inefficiency of our service.
对于我们服务的低效率，我必须道歉。
2.
I must apologize for coming so late.
因为迟到了，所以我必须道歉。
3.
I do have to apologize. It seems that our shipping department is to blame for the damage of the consignment.
我必须道歉。看起来我们的运输部门应该为这次的货物损坏承担责任。
4.
I must beg to apologize for the delay.
我必须为此耽误道歉。
5.
I must make an apology for losing my temper .
我发了火，必须为些道歉。
6.
You must apologize to your sister.
你必须向你姐姐道歉。
7.
You must apologize to your sister for being so rude.
你太无理了, 必须向你姐姐道歉。
8.
I must regretfully decline your kind invitation.
我很抱歉必须拒绝你的盛情邀请。
9.
I must apologize to the readers for having gone beyond my last. Since I am not a student of literature, I can say only what I feel.
我必须向读者道歉，因为我说了外行话。我本非研究文学的，只能把我的感觉说出来。
10.
Apologize./Please accept my apology.
我道歉。∕请接受我的道歉。
11.
I'm sorry, I can't, because I must study European literature now.
我很抱歉，我不能，因为我现在必须读欧洲文学。
12.
I must offer her an apology for not going to her party.
我没有去参加她的聚会，必须向她表示歉意。
13.
"Ma foi, my dear sir," replied Franz, "make no apologies.
“真的！我亲爱的主人，”弗兰兹答道，“不必为此道歉。
14.
I knew I had to run.
我知道我必须快跑。
15.
We must prolong the runway of the airfield.
我们必须加长机场跑道。
16.
I must find who to ask.
我必须知道去问谁。
17.
It is also a good idea, of course, to apologize for the useless waiting and to assure the other or others that it will never happen again.
当然，最好也必须为引起无谓的等候道歉，并向对方保证绝不再犯。
18.
He must apologize he saw that clearly enough, must eat crow, as he told himself.
他必须道歉，这他再明白没有，他心想，非低一下头不可了。