do: Base/infinitive; utilized for present tense apart from with third man or woman singular topics (other than the singular they ‘Do’ and ‘Does’ can also emphasize the validity and assertion of statements. This is especially handy in responses to doubts or when a person should affirm an expression emphatically. https://cristianelmon.bloggactivo.com/36397958/5-simple-statements-about-does-proleviate-help-with-shoulder-pain-explained