1. HAVE TO vs MUST (be SUPPOSED to)
1.1. Must don't use in the past
1.2. Be supposed to (от нас ожидают, что мы сделаем, но не должны)
1.3. Don't have vs Mustn't
1.4. HAVE TO or HAVE GOT TO (сокращение I've gotta go)
2. SHOULD (OUGHT to) synonimous
2.1. SHOULD've + Past Participle
2.1.1. I should've applied some suncream
2.1.2. I should've put on my hat
2.1.3. I should've said that I need help
2.1.4. I should've stayed in bed yesterday
2.2. Shouldn't HAVE + Past Participate
2.2.1. I shouldn't have bought another new bag
2.2.2. I shouldn't have eaten a pizza at a gas station
2.2.3. I shouldn't have worn hight heels
3. THINK OF (opinion about)
3.1. What do THINK OF the book?
3.2. I THINK ABOUT my holiday
4. MAY
4.1. May I (ask for permition)
4.1.1. May I ask you about your daughter?
4.2. Maybe
4.2.1. Maybe i will come for the weekend
5. CAN (be ABLE to) be ALLOWED to (permition)
5.1. CAN = BE ABLE TO (manage to) - physical abilities - skills - permitions
5.1.1. I can (am able to) cook any pasta
5.1.2. Ann was able (managed) to climb the tree (у нее получилось, приложила усилия, разовый успех)
5.1.3. Ann can climb the tree
5.1.4. I can visit you next Monday (могу)
5.1.5. I will be able to visit you next Monday (смогу)
5.2. be ALLOWED to (permission)
5.3. COULD - opportunity or skill in the past - supposition (предположение) - polite request (запрос, просьба)
5.3.1. I could play volleyball very well when I was at school
5.3.2. I couldn't run short distances at school
5.3.3. My daughter could read when she was 5
5.3.4. I could come to work earlier and swim in the pool. But now I get into traffic jams almost every day
5.3.5. We could visit my mom in October
5.3.6. Could I borrow your key, I forgot mine at home
5.4. COULD HAVE ('ve) + Past Participle - an unrealized opportunity in the past - not be possible (in past) - criticism or irritation (раздражение) COULD'VE+ Past Participle (мог бы, но не сделал про какой-то причине) COULDN'T HAVE + Past Participle (не мог даже гипотетически потому что)
5.4.1. I could've arrived at the meeting on time, but I stuck in traffic
5.4.2. I could've become a reportage photographer, but I like teaching children so I back at school
5.4.3. I couldn't have heard anything. I was wearing headphone
5.4.4. You could've washed the dishes when you were at home
5.4.5. My daughter could've learned English with a tutor but decided to prepare for the English exam herself
5.4.6. I could've called you, but i met my friend and we went at the party
5.4.7. I couldn't have called you, I don't have your phone number!