Question

TASK B: Complete each sentence with must or mustn't.
Swimming pool rules
1. Swimmers
Take a shower
before getting into the pool.
2. Small children
swim wilhout
a parent.
3. Swimmers
dive into the
deep end of the pool.
4. Non-swimmers
jump off the
diving board.
5. Non-swimmers
wear
lifejackets.​

Answer 1

Resposta:

1 - Swimmers must take a shower before getting into the pool.

2 - Small children mustn't swim without a parent.

3 - Swimmers must dive into the deep end of the pool.

4 - Non-swimmers mustn't jump off the diving board.

5 - Non-swimmers must wear lifejackets.

Explicação:

mustn't deve ser usado quando algo não deve ser feito. (não devem)

must deve ser usado quando algo deve ser feito. (devem)