Building a case

Today, I would describe how to express for debating topic. According to an issue, we pick one side to persuade someone. For instance, 'Do you think English will remain the world's business language in your lifetime?' Some people might agree or disagree. In order to insist on your opinion, give your reason and listen carefully to other's opinion.

Once, for the example topic, we can start the opinion like that,

Englinsh can be used as a lingua franca, for example If you go to China....

* Expression
1. Giving reason
- because / as
- It's mainly because ...
- One reason is that ...
- Another reason is...
- Due to the fact that ..

2. Giving examples
- For instance,
- For example..
- Such as
- One example is..
- Another example is ...

Here is corrections what we make mistake.
- I lost my weight about 5 Kilos / I often run about 5 ks (don't have to use my in front of weight when you say your weight and kilos implies weight not kilometer)
- Buying time = that's a good question / I don't think there is an easy answer
- I need to improve my English(skill) / reading skills / speaking skills (don't have to use skill after English)
- That's true // but, .. I think there are too many carbs in potatoes.

Trick : Disagreeing Politely: agree(lie) + but + real opinion.
That's true // but ..
I see what you mean // but ...
Yes / manybe your right // but ..
One reason is that..

Correction.
Korean language
It's more easier
If we only use Enlgish It could/would save money on translation
I think it's a kind of cultural imperialism to make people learn.