Singular and plural

Lines

straight A straight line can be in any direction. — \ /

horizontal A straight line that goes across from side to side. —

vertical A straight line that goes from top to bottom. |

The verb ‘to be’ Use the verb is with single and uncountable nouns. For example: A heart is an organ. Use the verb are with plural nouns. For example: There are many organs in the human body. Other verbs Who or what Verbs I, you, we, they look, explain, change, transfer, use it, she, he looks, explains, changes, transfers, uses If you start a sentence with It, She or He, you must put an ‘s’ on the end of the verb. It is easy to get confused with the letter ‘s’ at the end of English words. Remember: an ‘s’ on the end of a noun usually makes it plural (for example: 1 vein, 2 veins). Remember: an ‘s’ on the end of a verb makes it agree with it, she, he (for example: it reflects, she experiments). Uncountable nouns describe things that are impossible to count, for example water, Singular and plural Singular means one thing. Plural means two or more things. A verb describes an action, state or event. curved line A curved line is not straight. SAMPLE sand and oxygen. Uncountable nouns behave like it, she, he or singular things, and we add an ‘s’ to the end of verbs that follow these words. Be careful, there are some irregular plural nouns, for example: 1 cactus, 2 cacti and 1 species, 2 species.