✨ ベストアンサー ✨
❌ to concentrate to classes.
✅ to concentrate in class.
✅ to concentrate during classes.
_______________________________________________________________________
❌ using smartphone in school
✅ using one's smartphone in school
✅ using a smartphone in school
✅ the use of a smartphone in school
_______________________________________________________________________
✅ Using a smartphone in school contributes to not concentrating in class.
✅ Using a smartphone in school causes students to be less concentrated in class.
✅ Using a smartphone in school harms the concentration of students.
_______________________________________________________________________
❌❌ they decrease their grade
❌ I got good grades for my test.
✅ I got a good grade for my test.
❌ I got a good grade this year. ---> only one good grade in a whole year?
✅ I got good grades this year.
✅ The company decreased production. [他動詞]
✅ Unemployment decreased in 2023. [自動詞]
❌ they decrease their grades <-- intentional action
✅ their grades decrease [自動詞]
_______________________________________________________________________
🟠 Using a smartphone in school contributes to not concentrating in class, and as a result their grades decrease.
❓ their grades <--- whose grades ???
✅ Using a smartphone in school contributes to not concentrating in class, and as a result students' grades decrease.
✅ Using a smartphone in school harms the concentration of students, and as a result their grades decrease.
✅ students <---- their
_______________________________________________________________________
❌ Secondly, communicating with their friends are a critical factor in school life.
🧘 A gerund is always singular.
❌ communicating are ...
✅ communicating is ...
✅ <communicating with friends> is ...
🟠 Secondly, communicating with their friends is a critical factor in school life.
❓ their friends <--- whose friends ???
✅ Secondly, communicating with friends is a critical factor in school life.
_______________________________________________________________________
❌ Using smartphone in school
✅ Using a smartphone in school
❌❌ make their bad
✅ makes students bad at communicating
❌ they are into game
✅ they are into games
✅ because they are into games and don't talk with their friends.
✅ Using a smartphone in school makes students bad at communicating because they are into games and don't talk with their friends.
_______________________________________________________________________
🟠 For these reasons mentioned above, I believe that they should not be allowed to take their cell phone to school.
✅ For the reasons mentioned above, I believe that students should not be allowed to take their cell phones to school.
_______________________________________________________________________
✅ I hope this is helpful!
ありがとうございます😭