During the two hours, we just listened to him and I really appreciatedenjoyed it. During the two hours, we just listened to him and I really enjoyed it.

Again slightly guessing as to your meaning. If you thought the lecture was interesting and engaging, I would say something like "I enjoyed it"

DuringFor two hours, we just listened to him and I really appreciated what he had to say. For two hours, we just listened to him and I really appreciated what he had to say.

"During those two hours" would be okay if you had mentioned that the lecture was 2 hours long previously. "For two hours" sounds better generally if you want to emphasize the length of the time period. Like the other commenter said, "enjoyed" might be better here, but if you meant that you "felt gratitude towards the researcher and found a lot of value in the experiences he shared" what I wrote conveys that.

It's a little lego egg with some lego bricks to build a mini lego. It's a little lego egg with some lego bricks to build a mini lego.

Instead of "mini lego" I would instead say what the model would build (eg: "to build a model of Santa's workshop")

I am doing a full body program because I only go to the gym 3 times a week, and it's better to work every muscles during several seancessions. I am doing a full body program because I only go to the gym 3 times a week, and it's better to work every muscle during several sessions.

I was initially quite confused because "seance" in English has a very specific meaning. It refers to a ritual where a spirit medium converses with the spirits. It actually comes from the French word! However, the word we'd use to mean what seance means in French is "session".

I am doing a full body program because I only go to the gym 3 times a week and it's better to work out every muscles during several seanceseach session. I am doing a full body program because I only go to the gym 3 times a week and it's better to work out every muscle during each session.

Other commenter explained, but yeah :P I changed several to each because that makes it clear that each time you go to the gym you're doing a full body workout (that's what you mean, right?). If you say several it can sound like you do a full body workout over the course of several sessions (so arms + core on Monday, back + legs on Tuesday, etc...)

Today, I'm doing great and I a'm so happy because I'll be ion vacations from tomorrow, and see my cousins, who I didhaven't seen for 2 months. Today, I'm doing great and I'm so happy because I'll be on vacation from tomorrow, and see my cousins, who I haven't seen for 2 months.

Generally when you use contractions like "I'm" and "I'll" it's best to use them everywhere. Past perfect tense makes the most sense here since you are explaining that an event did not occur over a time period.

Today, I'm doing great and I am so happy because I'll be ion vacations starting tomorrow and will get to see my cousins who I didhaven't seen for 2 months. Today, I'm doing great and I am so happy because I'll be on vacation starting tomorrow and will get to see my cousins who I haven't seen for 2 months.

Today it was interesting because a researcher talked about his job and introduced us to some aspects of his life. Today it was interesting because a researcher talked about his job and introduced us to some aspects of his life.

I'm guessing "researcher" is what you meant here.

Today it was interesting because a researcher talked about his job and introduced us to some aspects of his life. Today it was interesting because a researcher talked about his job and introduced us to some aspects of his life.

After this 2 hours class, I had a TP (traveaux pratique in french, so pratic works in English?) in chemistry. After this 2 hours class, I had a TP (traveaux pratique in french, so pratic works in English?) in chemistry.

I don't speak French, but it seems like (after googling it) this refers to a practical project. You could just say "practical" or "project" in the context of education and most people will understand what you mean.

After this 2 hours class, I had a TP (traveaux pratique in french, so pratic works in English?)lab work in chemistry. After this 2 hour class, I had lab work in chemistry.

I think you're talking about what we call "labs" or "lab work," which is where you do hands-on stuff like dissecting pigs for biology class, etc...

We didn't choose our partner so I was with a guy I don't really appreciatlike because he's a bit weird. We didn't choose our partner so I was with a guy I don't really like because he's a bit weird.

"Appreciate" feels a little unusual here. "Like" is a better fit in my opinion.

We didn't get to choose our partners so I was with a guy I don't really appreciatefeel comfortable with because he's a bit weird. We didn't get to choose our partners so I was with a guy I don't really feel comfortable with because he's a bit weird.

Or you could say "I don't really like" although it's a lot more rude and straightforward :P Adding "get to" emphasizes your inability to choose because your professor didn't let you partner -> partners for matching the plural "our", but I think in casual conversation just saying "partner" would slide

However, those 2 hours were pretty cooln't so bad, and I think we passed the TP, and. I hope I'll get a good grade. However, those 2 hours weren't so bad, and I think we passed the TP. I hope I'll get a good grade.

This might change the meaning slightly but should preserve the overall meaning. Since you mentioned you don't like the guy it feels natural to follow up by expressing that it wasn't as bad as you had expected.

However, those 2 hours were pretty cool, and I think we passed the TP, andlab. I hope I'll get a good grade. However, those 2 hours were pretty cool, and I think we passed the lab. I hope I'll get a good grade.

So, instead of finishing at 7 p.m, I finished at 12 a.m. So, instead of finishing at 7 p.m, I finished at 12 a.m.

I had a really short school day today because one of my teachers wasn't here and I didn't have the mathematics class I usually have (it's to prepare us for the "Olympiades", a fFrench competition, but you can don't have to go if you don't want to). I had a really short school day today because one of my teachers wasn't here and I didn't have the mathematics class I usually have (it's to prepare us for the "Olympiades", a French competition, but you don't have to go if you don't want to).

When phrasing negative possibilities ("you don't have to") the rest of the conditional is also phrased in the negative.

I had a really short school day today because one of my teachers wasn't there and I didn't have the mathematics class I usually have (it's to prepare us for the "Olympiades"," a fFrench competition, but you can don't have to go if you don't want to). I had a really short school day today because one of my teachers wasn't there and I didn't have the mathematics class I usually have (it's to prepare us for the "Olympiades," a French competition, but you don't have to go if you don't want to).

you would use "here" if you were still at school but I'm assuming you're not(?) Alternatively "you can choose not to go if you don't want [to go])

I takeook advantage of this by hanging out with friends, and eating some tacos inat a fast food place near the University. I took advantage of this by hanging out with friends, and eating some tacos at a fast food place near the University.

Since this happened in the past it should be in the past tense. Generally "fast food" refers to the food itself, you'd buy and eat it at a "fast food restaurant" or "fast food place" (less formal)

I takeook advantage of this by hanging out with friends, and eating some tacos inat a fast food place near the Uuniversity. I took advantage of this by hanging out with friends, and eating some tacos at a fast food place near the university.

Needs to be past tense