1.To make a polite inquiring.
Could I borrow you bike for two days?
2.To show gratitude for surpport.
Thank you very much for you to encourage me.
3. To request financial help.
My wallet was stealed in the morning when I went to school by bus.So, I have little money.Could you lend me 50yuan?
4.To show dissatisfacation with a decision.
I really disagree that she become our monitor.
5.To explain why sth. happened.
Because of the traffic jam,I am late.
6.To espress pleasure that an event.
I am quite pleasure that you can take part in our Culture Week.
7. To support a job application.
I am good at English.So, I want to be a translator in you company.
8.To ask for an apology.
You lost my bike .You must apologize to me and buy a new one.
9.To espress concern about safty.
Safty is very important for every people.I concern about safty and health.Becausr both of them are the foundation of the work.
10.To complain about a service.
I called for you to fix my washing meachine last week.But till now,you have not service for me.