English Grammar Complex Sentences
Learn English Complex Sentences Grammar

Grammar Level 6- Lesson Four

In this grammar lesson, you learn about Complex Sentences in English and how to use it in your English conversation and writing. Just follow examples and write them down a few times to learn them very well. After finishing this lesson, you should work on its quiz.

Grammar Recap

In our previous lesson, we covered the Compound Sentences If you just landed on this page, we suggest that you complete our previous lesson including its quizzes before continuing on this lesson.

Requirement Lessons

There is no required lessons for working and learning this lesson.


Complex Sentences


A complex sentence is made from an independent clause and a dependent clause joined together.

Some examples:

After I came home, I made dinner.

(dependent clause: “After I came home”)

(independent clause: I made dinner)


We visited the museum before it closed.

(dependent clause: before it closed.)

(independent clause: We visited the museum)


Complex sentences are often formed by putting these words at the beginning of the dependent clause: as, as if, before, after, because, though, even though, while, when, whenever, if, during, as soon as, as long as, since, until, unless, where, and wherever. These words are called subordinating conjunctions.


Here are some examples of complex sentences:

Because the bridge wasn’t properly maintained by the government, it fell down.

independent clause: it fell down

dependent clause: because the bridge wasn’t properly maintained by the government


Although he ate a really big dinner, now he wants to eat cake for dessert.

Whenever they eat at this restaurant, they order a hamburger and fries.

He’ll be able to maintain a healthy weight if he keeps exercising.

Because the world is getting warmer, polar bears are in danger of becoming extinct.

In the next lesson, we’ll learn about compound-complex sentences.


Quiz for Complex Sentences

Now that you learned your new lesson, it is time to go to the Complex Sentences page and finish your quiz. While working on your quiz, you can always go back to its lesson to refresh your memory.

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Next Grammar Lesson

In our next lesson, we will cover the Compound Complex Sentences Before moving to the next lesson, we suggest that you complete this lesson including its quizzes.

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Grammar Level 6 Outline

If you wish to explore all lessons that are covered in HiCafe Grammar Level 6, you can visit the Grammar Level 6 Outline page.


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