Marian is a famous black singer.
Peter tries to cook Chinese food.
The class usually begins at 10’ clock in the morning.
The sun sets in the west.
We start for England next money.
Let us have a walk after the supper.
They are planning a surprise party for David’s birthday.
She is going to swim with her classmates after school.
(3) 常与(always, often)时间副词连用，表示反复或习惯的动作。
He is always reading a novel by listening to paint music.
(1) 一般现在时不用在表示发生于现在这一刻的动作或状态，若要表示发生于 现在一刻的动作或状态，要用现在进行时。
i watched a volleyball game with my family last Tuesday.
(2) 过去的习惯动作，常与always, usually 等连用
Lucy always borrowed foreign language book from the library.
They said that some of tasks were too different for the students.
1)表示现在刚完成的动作，常与(yet, already, just, now)等副词连用
Have you finished your essay yet? Yes, I have just done with that.
2) 表示过去某时到现在的经验，常与(ever, never, before, once)等副词连用。
He has never been treated like this in his life.
He has gone to India. ( 表完成)
He has been in Thailand. (表经验)
I have known this family for many years.
They have prepared for this show since last semester.
4) 由when, if, after, till, as soon as等引导的状语从句中，以现在完成代替将来完成。
I will read that book when I have finished my preparation for speech.
Shall we have a trip as soon as we have arrived at that small village?
I did not look at the paper this morning.(已过了早晨)
I have not looked at the paper this morning.(仍在早晨)