 auxiliary
I'm using a text book named A University Grammar of English ,an interesting but difficult one .In the chapter about verbs & the verb phrase ,I find the classification of verbs :
verbs consist of two kinds,lexical verbs & auxiliary .Modal auxiliaries include can ,may shall ,will ,could ,might ,should,would,must,ought to,used to ,need,dare
what's about have to ? Is have to a modal verb?
If it is a modal verb ,why isn't it mentioned in this part?
Please help me with this . |