But then we would have to find separate words for every action or event denoted by different lexical verbs: a mammoth and unnecessary task.

The verb phrase of a sentence is generally headed by a lexical verb.

As a lexical verb (rather than an auxiliary), many speakers and writers frequently use this verb.

Both suffixes have their origin in grammaticalized lexical verbs ("do" and "be/exist" respectively).

The form of each lexical or auxiliary verb (apart from the first) is determined by the auxiliary preceding it.

The present simple of lexical verbs has an expanded form which uses do (or does, in the third person indicative) as an auxiliary verb.

Their inflections may be irregular or have different inflectional endings from those of lexical verbs, which are as follows:

The functions of the anterior and posterior differ between auxiliaries; with lexical verbs, they are non-past and past.

Relating to the lexical verb involved in the construction:

The present conditional is formed using the special particle bi, plus the l'-participle of the lexical verb.