Part 4: Please read parts 1 to 3 first:

When I see a race of MotoGP I prefere to see a race watch it alone because I have to hear the comments on race.

1/ Again I recommend "watch" over "see".

2/ You are repeating "see a race". "Watch it" is shorter and more to the point.

The winner of race has been was Marquez and Valentino Rossi was only fourth.

"Has been" is used when you are talking about something that was in the past, and is still happening in the present. In this case the race was in the past, so you use "was".

I love motoGP because the motorcycles is are very fast.

There is more than one motorcycle, therefore you need to use the plural.

Part 3: Please read parts 1 and 2 first

Tha The race is start started at 9 o'clok 09:00 in Italy and at 14 o'clok 14:00 in Thailand.

1/ You can't say "is start". The present form is "starts", the past form is "started".

2/ The expression is actually o'clock, but you can't use it with the 24 hour clock. There is no 13 o'clock, 14 o'clock, etc. Instead if you wanted to be clear about the time with a 12 hour clock you would say "9am" (for morning) and 2pm (for afternoon). Otherwise you need to use times like 09:00 and 14:00. You should know though that the 24 hour clock isn't very common in English speaking countries outside of people who have seen military service. A lot of businesses now include opening hours in 24 hour times on their web sites, but relatively few people would say "I'll meet you at 15:35 at the cafe", unless they spent time in uniform. I still do it and it usually just annoys anyone who has always been a civilian. In continental Europe, it's more common.

The race it was held on over twenty-five rounds laps, and there have been many was a lot of overtaking.

1/ "It" is a pronoun. It is used instead of a noun (sostantivo). In this case you have the noun ("the race") so you don't use the pronoun as well ("it").

2/ "Held" is understandable, but a race is normally "run" over a certain number of laps.

3/ It would be more common to use digits (25) than to spell out numbers which are greater than 10.

4/ Races run over a number of laps. A "round" is an individual race in a championship. The Thailand race is a "round" of the MotoGP championship. Japan will hose the next round. However a motorbike completing one trip around the circuit is a lap.

5/ "Overtaking" is a verb, not a noun. You can't really have "many" of them. You could say "there were many overtaking manoeuvres", but it's easier to say "a lot of overtaking".

And continued once again...

Part 2: Please read part 1 first. The line breaks are likely to be weird here:

The MotoGP is the championship in the world of motorcycles, and runs on the more important circuits plus important of the wold world, and this year it runns runs in Thailand for the first time.

1/ You can't say "is qualcosa". It has to be either "is a qualcosa" (if it is one thing out of many things), or "is the qualcosa" (if it is one specific thing). (In this case, it is the championship for motorcycle racing.)

2/ "Championship" is singular. A single things runs, plural things run.

3/ I suspect that you got "plus important" from "più importante". This would roughly translate to "the more important".

4/ The competition runs on many different circuits, so circuits has to be plural.

I see saw the MotoGP when I was children a child because I am a fan of Valentino Rossi.

1/ "See" is present tense, "saw" is the past tense.

2/ Children is plural, a child is singular. You are only one person, so it's singular.

3/ Although in this case I think you may have meant "I have watched the MotoGP ever since I was a child". That would mean that you have regularly watched the competition for many years.

The sentence that you have written suggests that you watched the competition once, many years ago when you were a child. I don;t think that was what you intended.

To be continued again...

Part 1

The motoGP is very fast

1/ "Wake" is the present form, "woke" is the past form.

2/ You would never say "for to" do something. Usually it will be "to". There are a few instances where you may use "for". (For example, "I woke up early for breakfast.") You would never use the two together, though.

3/ "See" is OK in this sentence but I would probably use "watch". "See" = vedere, "watch" = guardare in the sense of " guardare la televisione".

4/ "MotoGP is the proper name of the competition. You therefore need to use a capital letter. (lettera maiuscola).

5/ You weren't watching the entire competition, just one race in it.