Show students the title and picture about 'Mysteries and oddities'. Instruct students to talk with a partner about 'what sleepwalkers are able to do when sleepwalking' in pairs (2 min). Send to breakout rooms. CAUTION: create two extra for late comers. Ask one pair what they talked about (1 min).

Students read some sentences related to sleepwalking and other oddities. The sentences contain 2-4 choices of modal verbs. Students decide which ones are correct and send to the teacher all their answers in a single private message using the private chat (4 min). This will be checked in the next stage.

1. Both correct, 'have to' is better. Should: students read examples. Ask if it is a strong obligation or not. Write 'not strong', 'good idea', 'right thing', 'not necessary'. "The negative form means that it is not a good idea'" Have to: teacher reads examples. Ask if the obligation comes from the speaker or someone else. Write 'external'. Which of these modals is better? Have to. Ask "What word comes after both modals?" Verb in bare infinitive. Highlight verbs. Model and drill each modal, and each sentence. Stress on 'have', 'careful'; 'careful'. 2. Both correct. Must: students read examples. Ask if it is a strong obligation. Write 'strong', 'internal'. Ask "What word comes after both modals?" Verb in bare infinitive. Highlight verbs. Model and drill must and each sentence. Sentence stress on 'cover' and 'mouth'; 'must'. Which of these modals is better? Depends on the culture, if it is a strong believe use 'must', if it is only polite use 'should'. 3. Must is correct. Must: students read the new example. Write 'from the evidence, I know this is true'. Extension: That baby boy is tiny, he must... be a newborn, be premature, be one week old. What word comes after? Verb bare infinitive. Model and drill, must, sentence. Sentence stress on 'must' and 'frightening'. 4. Can't is correct. Mustn't: teacher reads the example. Write 'not allowed to'. Extension: Before the age of 18 you mustn't... drink alcohol, drive. Can't: students read the example. Would it be the opposite of must? Write 'opposite of must'. Extension: he can't be sixty, he looks... younger, very young, about 50 max. What word comes after? Verb bare infinitive. Model and drill, mustn't, can't, sentence. 5. May and might are correct. May: read examples. Ask what is the time tense in each one. Write 'present or future'. Might: read examples. Ask what is the time tense in each one. Write 'past, present or future', 'past of 'may'. What word comes after? Verb bare infinitive. Model and drill, may, might, can't, sentences. 6. Which of the modals expresses the strongest probability? Must Which one expresses that something is completely impossible? Can't Which one expresses a middle degree of probability? May, might Draw an arrow from "can't" to "must"

Share link to form. Ask students to complete fill the gaps (5 min). Check answers as a group (5 min).

Share link to slides. Pair work (6 min). Ask students to write about the perfect English language student using six modal verbs. Check as a group by asking volunteers read 1 sentence. (4 minutes)

Write and elicit corrections to the use of the language in real time.