2. 多种表达

I am always very optimistic.

I am always very hopeful.

I am always very sanguine.

I am very optimistic about our chances of success.

I am very optimistic that we'll succeed.

Things will turn out all right.

Things will work out all right.

Everything will be fine.

Tomorrow must be bright.

I am sure about success.

I am sure that final success belongs to me.

I feel sure that I will win.

I feel sure that he must turn up.

I am confident about his appearance.

I am sure that he must come here.

I have every confidence in his success.

I have every confidence that he will succeed.

There is no doubt that he is going to be an excellent scientist.

Without any doubt, he is going to be an excellent scientist.