形容詞與副詞比較級/最高級的變化[er/the est]方式是不是只用在BE動詞而已.謝謝?

.

The auxiliary verbs to be can be used in :-eg:-
Have, has, had--Do does,did---Shall ,should---Will, would etc, when you come across the comparision of adverbs eg:-in adding -er and -est eg:-
Positive(soon)--Comparative(sooner)--Superlative(soonest) be always refer to Chen's The Heart Of Grammar ! eg:-Applying "sooner" as the sample:_
(1)would:-I would sooner rather die than under usa conquest..
(2)had---No sooner had China calm down than they had to get up again versus usa.
(3)do----The sooner you do read Chen, the better.
(4)will---Don't worry;  she will get well sooner or later in covid19 virus.
Hence it is not only used in the verb to BE, but all the auxiliary verbs.