سلام. خیر modal verbs نیستند. عبارت مصدری to be going to که بعد از آن ریشه فعل یا مصدر بدون to می آید، برای نشان دادن انجام کاری در زمان آینده نزدیک است:
to be going to: followed by a verb in the infinitive, allows us to express an idea in the near future.
Ex.: They're going to have a baby in the spring.
و بعد از مصدر to want یا فعل want، (اکثراً) فعل به صورت مصدر با to می آید؛ وقتی به معنی need باشد به صورت -ing form می آید. به کاربردهای زیر دقت کنید:
*Want:
We use the verb want to talk about wishes and needs, and to give advice: …
**Want meaning ‘wish’ or ‘desire’:
We always follow want with a complement of some kind. The complement completes the meaning of the clause. The complement can be a noun or pronoun as an object, or a verb in the to-infinitive form, or an object plus a verb in the to-infinitive form: …
Ex.: I want some chocolate.
***Want meaning ‘need’:
We can use want with
the -ing form of a verb to say that something is necessary or should be done. This usage is quite informal: …
Ex.: The wine is in the fridge - it just wants cooling for a couple of minutes.
****Want for advice and warnings:
In informal situations, we can use want plus the to-infinitive to advise, recommend or warn. It is almost always in the present simple, but we can also use it with ’ll (the short form of will): …
Ex.: She wants to tell him now, before it's too late.
نمونه های بیشتر:
[ + to infinitive ] What do you want to eat?
[ + obj + to infinitive ] Do you want me to take you to the airport?
[ + obj + past participle ] This package - do you want it sent today?
[ + obj + adj ] Do you want this pie hot?
[ + obj + -ing verb ] I don't want you coming in at two a.m., waking me up.
You wait - by next year she'll be wanting a bigger house!
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