Auxiliary verbs. Modal auxiliary verbs. English tense usage in the Active Voice. English tense usage in the Passive Voice. A Table of Irregular Verbs. Verb + ... ing (The Gerund). Verbs + The Infinitive. Verbs + ... ing (The Gerund) or verbs + The Infinitive? Count nouns and non–count nouns. Genitives: "s" or "of the"? The Indefinite Article "a"/ "an". The Definite Article "the". Pronouns. Adjectives. Adverbs. Prepositions. Word Order. Subject–verb agreement. Reported Speech.