I am happy for your friend that he managed to escape more serious injuries. I hope for a quick recovery for him.

Your text however although uses very nice words but has a few issues. Somtimes the suggested text is a correction. Sometines it is merely a matter of choice or style (i.e. not incorrect but less frequently used).

Please pay attention to your punctuations' spacing. You need NO space before a punctuation but one after it. For example (notice the period "." and how the spacing should be before and after it):

INCORRECT: I am fine .Did you hear about...
CORRECT: I am fine. Did you hear about...

A shock thing (or "A shocking  car accident" or "A shocking thing --...") ——car accident

I heared (“heard”) a shock ("shocking") thing about my friend yesterday, (space after ",")it is unbelievable for everbody (“everybody”). A car accident happened around me about my friend tim (this does not convey the right  meaning. Perhaps: "My friend Tim was involved in a car accident close to me"). 

it’s happened afternoon of March 10 2011. ("It happened in the afternoon of March 10, 2011")

my friend rideed (“rode”) the (“his”) bicycle want to across the road，(“.”) Suddenly (“there is “) a car in front of him，(“. “)He lie (“lies”) on the ground，(remove “,”) ten metres away from his car，if you arestay in that situation， you must think he cann't (“can’t” or “cannot”)  escape is (“his”) misfortune，but miracle appear，thanks the god，thanks you save him.

(You have to break the sentence above into at least 3 different sentences. Using comma is an incorrect way of attaching disjointed topics into one sentence.  And once again please note the spacing aorund it.

Tim was only a minor injuries，only need recuperate a few days.i hope he recovery health as quickly as possible

("Tim had minor injuries and only needs a few days to recuperate. I hope he recovers (or "regains his health") as quickly as possible")



keep up the good work Apple :-)

A shock thing ——car accident