UNIT Work Simple Present: Part 1 - Cengage
https://ngl.cengage.com/.../grex1_su3.pdfWebSimple Present -s and. The ending of third-person singular verbs has three sounds: /s/,/z/,/ z/. Say /s/ after /p/,/t/,/k/, and /f/ sounds. Say /z/ after /b/,/d/,/g/,/l/,/m/,/n/, / /, /r/,/v/, and / / …