American English Language School

Even fluent speakers slip up on a few English grammar rules — and small mistakes can change your meaning or dent your confidence. At AELS Los Angeles , here are some of the most common ones we help adult ESL learners fix. Simple past vs. present perfect: "I lived in Los Angeles for five years" means you moved away; "I have lived in Los Angeles for five years" means you still live here. Subject–verb agreement: match the verb to the real subject. "The list of items is on the desk" — not "are." Articles (a, an, the): use a/an for something general, and the for something specific. Prepositions of time: in June, on Monday, at 3:00. Run-on sentences: don't join two full thoughts with just a comma — add a period or a word like "so." The fastest way to make these stick? Practice out loud, with feedback. Our small-group ESL classes in Los Angeles give you the time and support to catch these patterns and correct them naturally — f...