1. When to use?
1.1. Used for facts that are true in general, **repeated actions or routines,** and things that are always true
1.2. General truths
1.2.1. Water **boils** at 100 degrees Celsius
1.2.2. The sun **rises** in the east and **sets** in the west
1.2.3. Sound **travels** slower than light
1.3. Habitual actions
1.3.1. She **brushes** her teeth twice a day
1.3.2. They **go** for a walk in the park every evening
1.3.3. I **drink** a cup of coffee every morning
1.4. Permanent situations
1.4.1. I **live** in New York City
1.4.2. My sister **works** as a teacher
1.5. Schedules
1.5.1. The train **departs** at 9 a.m. every morning
1.5.2. The store **opens** at 8:30 a.m. and closes at 6 p.m.
1.5.3. The class **starts** on Mondays and Wednesdays at 10 a.m.
1.6. **Signal words:** - Always - Usually - Often - Sometimes - Rarely / hardly ever / seldom - Never - Every day/week/month/year - On weekdays/weekends - In general - Every time - Daily
2. How to form?
2.1. **+** positive
2.1.1. I, you, we, they
2.1.1.1. S + **V**
2.1.1.1.1. I **like** to read books
2.1.1.1.2. You **play** soccer on weekends
2.1.1.1.3. We **go** for a walk every evening
2.1.1.1.4. They **enjoy** watching movies
2.1.2. he, she, it
2.1.2.1. S + **Vs**
2.1.2.1.1. He **plays** the guitar
2.1.2.1.2. She **loves** to dance
2.1.2.1.3. It **rains** a lot in this city
2.2. **–** negative
2.2.1. I, you, we, they
2.2.1.1. S + **don't** + **V**
2.2.1.1.1. I **don't like** spicy food
2.2.1.1.2. You **don't work** on weekends
2.2.1.1.3. We **don't have** any plans for tonight
2.2.1.1.4. They **don't eat** meat
2.2.2. he, she, it
2.2.2.1. S + **doesn't** + **V**
2.2.2.1.1. He **doesn't like** coffee
2.2.2.1.2. She **doesn't speak** French
2.2.2.1.3. It **doesn't rain** often in this desert
2.3. **?** question
2.3.1. I, you, we, they
2.3.1.1. **Do** + S + **V** ?
2.3.1.1.1. **Do** I **need** to bring anything for the meeting?
2.3.1.1.2. **Do** you **enjoy** playing sports?
2.3.1.1.3. **Do** we **have** any plans for the weekend?
2.3.1.1.4. **Do** they **like** to travel?
2.3.2. he, she, it
2.3.2.1. **Does** + S + **V** ?
2.3.2.1.1. **Does** he **like** to play basketball?
2.3.2.1.2. **Does** she **speak** any other languages?
2.3.2.1.3. **Does** it **rain** a lot in this city?