ESL Grammar: Present Tense (practice adding -s/-es to verbs) Post author: Post published: Post category:Tenses Worksheets In this ESL grammar exercise, students must add -s or -es to several common verbs. Download lesson as pdf You Might Also Like ESL Grammar: Present Perfect Tense (how many times…) ESL Grammar: Tense Review Quiz (2) ESL Grammar: Past Continuous Tense (with “while” and “as”)