Expressions - Blame, Accusation, Complaint,

Blame:

1.       It was your fault/mistake. 

2.       You are the one to blame. 

3.       I hope you’re sorry. 

4.       How could you do such a thing? 

Responding Blame.
1.       Sorry for my fault.
2.       It’s my responsibility

Declining Blame.
1.       It wasn’t me.
2.       I’m not the one to blame. 

Accusation:

1.       It must have been you who did it. 

2.       I think you’re the one who could do it. 

3.       It must be you who did something wrong. 

4.       You took my magazine, didn’t you? 

Responding of Accusation
1.       No, I didn’t
2.       No, it wasn’t me.
3.       I’m sorry. I didn’t mean to.

Complaint:

1.       I'm sorry to say this but could we ask again for our drink?

2.       I'm afraid there is a problem with our English project.

3.       She was so annoyed about the atmosphere in that restaurant last night.

Positive Responses

1.       I’m sorry. This is never happen again 

2.       We promise not to do the same mistake.

Negative Responses

1.       Sorry, there is nothing we can do about it.

2.       We are afraid that there isn’t much we can do about it.

Dialog

Seller: Good morning Sir. Can I help you?
Buyer: Good morning. There appears to be something wrong with my laptop that I bought here a few days ago.
Seller: What’s wrong with your laptop Sir?
Buyer: My laptop can’t be connected to the internet.
Seller: How do you connect your laptop to the internet?
Buyer: I just open a browser and then input site address.
Seller: You need an internet service provider Sir. You can use modem to connect your laptop to the internet.
Buyer: So there is nothing wrong with my laptop?
Seller: No, Sir.
Buyer: OK, thank you!
Seller: You’re welcome!