The direct translation of this sentence would be; "J'ai joué le foot dans le parc avec mes amis."Translating this sentence isn't as easy as it first appears, as there are many specific details that will determine whether the translation is done perfectly or not. Firstly, you must pay attention to how you use the word "Je" (for I) as it will be followed by a vowel in this case, so it must become "J'". Secondly, it is important to identify the tense to which you will be conjugating and then the verb which you will have to conjugate; in this case the tense is the simple past tense as it is a single action that happened only once in the past. The verb is "to play". You will now need to conjugate to play into the past tense, and to do so you will need to know whether you will be using the verb "avoir" or "être" as the auxiliary.
After translating and conjugating the phrase "I played" you will then move onto translating the nouns in the sentence which are; football, the park and my friends. it is not only important to know the vocabulary in this case because unlike in the English language every French noun has a specific gender, and getting the gender right is very important. So, for each word it will be necessary to place "le" or "la" before the noun to demonstrate their gender. This will be straight forward for the words "football" and "park" as they are both masculine; however, if you were to use this sentence in your real life you would change the gender of "my friends" depending on who your group of friends were. If you were playing with a group of females the word would have an "-es"; however, with a mixed group of friends or only male the word would end in only an "-s". The other key things to pay attention to in this case is the use of possessions and propositions to ensure that the sentence is translated correctly.