Today, I reviewed some lessons in EnglishEnglish lessons. Today, I reviewed some English lessons.

Today I reviewed some lessons in EnglishEnglish lessons. Today I reviewed some English lessons.

I discovered that if I stopped to revise for a long daytime, I forgot some words. I discovered that if I stopped to revise for a long time, I forgot some words.

I discovered that if I stopped to reviseing for a long daysperiod of time, I forget words that I have learned. I discovered that if I stopped revising for a long period of time, I forget words that I have learned.

The sentence is not complete so it needs a comma

I discovered that if I stopped to reviseing for a long dayamount of time, I would forget some words. I discovered that if I stopped revising for a long amount of time, I would forget some words.

This sounds more natural.

I forgot some words tThat's why I need to revise, read, and practice every day. That's why I need to revise, read, and practice every day.

I forgot some words tThat's why I need to revise, read and practice everyday. That's why I need to revise, read and practice everyday.

I forgot some words tThat's why I need to revise, read and practice every day. That's why I need to revise, read and practice every day.

Me, too!