Dass - sentences

Another nice way to make a subordinate sentence is with – dass. In English we would say “that”. 

Ich finde, dass er nett ist. I think, that he is nice.
Ich denke, dass es morgen regnet. I think, that it will rain tomorrow. 

The grammar is quite obvious: The sentence with “dass” is a subordinate sentence and the verb is shiftet to the end. With a modalverb it looks the following way:

Es ist schade, dass du nicht kommen kannst. It is a pity, that you can not come.

Perfect tense: 

Ich finde es schön, dass es gestern geschneit hat.
I find it nice, that it snowed yesterday.