Words that show relationships in time or space (e.g., in, on, after, between ).

For actions in progress at a specific time in the past ( He was sleeping when the phone rang ).

One independent clause and one or more dependent clauses ( Because it was raining, we stayed inside ). 4. Common Grammar Pitfalls to Avoid

Even native speakers stumble on these common issues. A complete course must address:

Using "will" or "going to" ( I will call you later ).

Before you can build a house, you need to understand the materials. In English, every word falls into one of eight categories:

For an action completed before another past action ( The train had left before I arrived ). The Future Tenses

Names of people, places, things, or ideas (e.g., London, teacher, freedom ).