Hello
Please help
1. Is to, are to (be+ to), has to etc(auxiliary +to-modelverbs)
Are these model verbs
2. Voice/tense
My concern is if I replace is to/are to/have to with following model verbs - should/ will etc would the rules to define tense and voice structure remain same
For eg.
- this should be executed (future simple in passive voice ) (model verb+be+ objected acted upon)
Similarly
- task 'is yet to' (model verb) be executed -
- this has to(model verb) be taken on priority
Are these (present simple in passive voice )
Or
- he should be doing this
- he will be doing this(future progressive active)
Similarly
- he 'is supposed to' be doing this
This should also be in (present progressive active)
It's hard to understand all your questions. I think you mean "mod a l verbs". The modal verbs are not followed by 'to'.
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It's hard to understand all your questions. I think you mean "modal verbs".
The modal verbs are not followed by 'to'. They include can, could, will, would, may, might.
'have to' is called a semi-modal verb, but the others you are concerned about are verbal idioms (is to, used to, supposed to, going to, ...).
used to has only one form, and it app
1. Can we use model verb and verbal idioms in same sentence
2. Why can't we use it in future perfect tense