Use another before a singular countable noun when you mean one more or a different one: another chair, another idea. Use other before plural or uncountable nouns: other chairs, other information. Before a singular countable noun, put a determiner before other: the other chair or any other idea.
To choose an antonym, find the key meaning in the sentence and choose a word that changes that meaning in the right direction. Keep the same word class and read the new sentence to make sure it still works.
Use an apostrophe plus s for one owner, and after s for most plural owners. Use an apostrophe in contractions such as we're. Do not add one to ordinary plurals such as emails or to possessive pronouns such as yours.
An appetizer and a starter can both be a first course before the main course. Appetizer is common in North American English, while starter is common in British English.
Use a or an for one non-specific countable noun, and use the for a specific noun. Use no article with many general plural, uncountable, and proper nouns.
Choose a before a consonant sound and an before a vowel sound. Choose the for a particular person or thing. Leave the article out when you make a general statement about plural or uncountable nouns.
Use a or an for one non-specific countable example. Use the when the listener can identify the person, thing, group, or amount. Use no article when plural or uncountable nouns refer to a class or substance in general.
Use no article with a simple name such as Spain, Rome, or Mount Etna. Use the with many feature and group names, such as the Danube, the Pyrenees, and the United Arab Emirates. The place type gives you a strong first clue.
Use no article with some institutions when the usual activity is the point. Use the when you mean a particular building, visit, or location. Say at school for a student role, but at the school to identify one building.
Use no article after by for a general method of transport. Use a or the when you mean one vehicle, trip, or service. With media, learn the usual phrase: watch television, listen to the radio, read the newspaper, and see a report on the news.