adjective + to

James doesn't speak very clearly.

Compare these two sentences:

1. It is difficult to understand him.

2. He is difficult to understand.

 

You can use the same structures with many different words like:

- Easy, nice, safe, cheap, dangerous, exciting, impossible etc.

 

Example:

1. Do you think it's safe to drink this water?

2. Do you think this water is safe to drink?

 

You can say 'it's nice of somebody to do something':

- It was nice of you to take me to the airport.

 

You can use adjective + to... to say how somebody reacts to something:

- I'm sorry to hear that your mother isn't well.