The Grammar of 'Complain' Aim: This page is to help you choose the right part of speech for complain / complaint / complained etc. On this page: Grammar notes, prepositions, a situation and an exercise. Grammar Notes
|Word||Part of Speech||Examples|
|to complain||infinitive verb||I would like to complain about your services.|
|complains||third person verb||He complains all the time.|
|complained||past tense verb||Customers complained
about our services last year.
I complained to the customer service representative 2 weeks ago.
|have complained||present perfect verb||Recently several customers have complained about this problem.|
|complaining||continuous verb||Customers are complaining about our services.|
|adjective||We value complaining customers because they help us to improve.|
|gerund||Complaining makes me feel better.|
|complaint||noun||I have received a complaint about our services.|
(meaning: obedient / co-operative)
|adjective||The company is a compliant customer.|