===== Tenses =====
**What it is:** Time + form of verbs (present/past/future) and how we use them.  
**What it’s for:** Say when something happens (habit, now, finished, experience...).  
**Example:** “I work” (habit) vs “I am working” (now)

===== Sub-keywords =====
  * [[english:grammar:tenses:present-simple|Present Simple]]
  * [[english:grammar:tenses:present-continuous|Present Continuous]]
  * [[english:grammar:tenses:past-simple|Past Simple]]
  * [[english:grammar:tenses:present-perfect|Present Perfect]]

===== Quick choosing guide =====
  * **Habit / fact** → Present Simple
  * **Happening now / around now** → Present Continuous
  * **Finished past time (yesterday/last year)** → Past Simple
  * **Experience / result now / unfinished time (today/this week)** → Present Perfect

===== Hard words (Glossary) =====
  * *tense* /tens/: thì
  * *habit* /ˈhæbɪt/: thói quen
  * *experience* /ɪkˈspɪəriəns/: trải nghiệm
  * *unfinished time* /ʌnˈfɪnɪʃt taɪm/: khoảng thời gian chưa kết thúc (vd: today, this week)