Is she using the computer? Yes, I am. Are you playing the piano? Yes, I am. Are you talking on the phone? No, we aren't. Are you doing your homework? Yes, he is. Is he reading a book? No, he isn't. Is he ...
we only teach you the basic types like, for example, when you learn Conditional Type I and we teach youIf+present simple⇒Future “Will”. Of course, this is correct but as you get more proficient, you soon realize that there are so many variations to the basic...