must be doing (modal + continuous)
must be doing (modal + continuous) significa “”. . Formação: modal + be + V-ing
B2Formação
modal + be + V-ing
Explicação
Exemplos
He isn't answering — he must be sleeping.
The lights are on, so someone might be working late.
FAQ
must be doing (modal + continuous) — o que significa e como se usa?
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must be doing (modal + continuous) — como se forma?
modal + be + V-ing