What are they: Regular verbs follow consistent patterns, adding -d or -ed to form past tense and past participle, unlike irregular verbs that change unpredictably. Key spelling rules: Rules vary by ...

Gerunds are the -ing form of a verb, and infinitives are the to + base form. These words can be confusing; they combine the meaning of a verb with the grammar of a noun. My father asked me to phone ...

In addition, some of these verbs need an object, usually a person or people. The police warned us not to enter the building. The speaker invited the audience to ask questions. The best way to learn ...