===== Common Mistakes =====
**What it is:** High-frequency errors learners make.  
**What it’s for:** Fix mistakes early to improve faster.  
**Example:** “He go” ❌ → “He goes” ✅

===== Typical mistakes =====
  * **3rd person -s:** “She work” ❌ → “She works” ✅
  * **Countable vs uncountable:** “many informations” ❌ → “much information” ✅
  * **Prepositions:** “in Monday” ❌ → “on Monday” ✅
  * **Tense mismatch:** “Yesterday I go” ❌ → “Yesterday I went” ✅
  * **Word order:** “I very like it” ❌ → “I like it very much” ✅

===== Quick fix habit =====
  * Make a “mistake list” and review weekly.
  * For each mistake, store 1 correct example sentence.

===== Hard words (Glossary) =====
  * *countable* /ˈkaʊntəbl/: đếm được
  * *uncountable* /ʌnˈkaʊntəbl/: không đếm được
  * *mismatch* /ˌmɪsˈmætʃ/: không khớp