Are and is are both conjugations of the verb to be. ARE definition: 1. we/you/they form of be: 2. we/you/they form of be: 3. present simple of be, used with…. Learn more. Numbers 1 and 3 are both correct, because subjects and verbs are in agreement. Number 2 is incorrect, because the verb no longer agrees with the subject. Asked another way, the answer to question X is the primary cause of.and Y is the primary consequence of. seems to indicate are is the wrong choice. Learn punctuation marks with clear rules, correct usage, and common mistakes in English grammar. Simple guide for learners and teachers. The world's leading online dictionary: English definitions, synonyms, word origins, example sentences, word games, and more. A trusted authority for 25+ years! On June 6, 1944, U.S., British, and Canadian forces simultaneously landed on five beachheads in western Europe—code-named Omaha, Gold, Juno, Sword, and Utah —in a mission that marked a turning point in World War II. To use to be in the present tense, you have to first decide which is correct, is or are. The right choice depends on the subject for two reasons. It has to match subject-verb agreement: If the subject is singular, the verb must also be singular; if the subject is plural, the verb must also be plural. In English, there are 16 punctuation marks — the period, question mark, exclamation point, comma, semicolon, colon, em dash, en dash, hyphen, parentheses, brackets, braces, apostrophe, double quotation marks, single quotation marks, and ellipsis — and they’re not as scary as they sound. Find definitions for over 300,000 words from the most authoritative English dictionary. Continuously updated with new words and meanings. All of these symbols come in two major categories: punctuation marks and typographical symbols. These symbols have many different uses and include everything from the humble period (.) to the rarely used caret symbol (^).