Luyện tập: Dependent Clauses and Sentence Structure

Unit 98: Dependent Clauses and Sentence Structure

Understanding Clauses and Sentences

A clause is a group of words that contains a subject and a verb.There are two main types of clauses:

  • Independent Clause: Expresses a complete thought and can stand alone as a sentence(e.g., The dog is barking.).
  • Dependent (Subordinate) Clause: Does not express a complete thought and cannot stand alone. It usually begins with a subordinating conjunction (e.g., because the dog is barking).

Sentences are classified by their structure:

  • Simple Sentence: Contains one independent clause.
  • CompoundSentence: Contains two or more independent clauses joined by a comma and a coordinating conjunction (FANBOYS: for, and, nor, but, or, yet, so) or a semicolon.
  • Complex Sentence: Contains one independent clause and at least one dependent clause.
  • Compound-Complex Sentence: Contains two or more independent clauses and one or more dependent clauses.

Advanced Tip: Punctuation

When a dependent clause comes before the independent clause, use a comma to separate them (e.g., When the rain stopped, we went outside.). If the dependent clause comes after, you usually do not need a comma (e.g., We went outside when the rain stopped.).

Exercise 1: Independent vs. Dependent Clauses

Identify whether the underlined group of words is an Independent Clause (I) or a Dependent Clause (D).

1. If you need my opinion, I think blue is best. _____
2. The dog pants when it is hot outside. _____
3. Until the police arrived, no one moved. _____
4. Because I was tired, I went to bed early. _____
5. She came home at last after a long trip. _____
6. When the cake was served, everyone cheered. _____
7. Maria is a letter carrier who walks miles every day. _____
8. Please pass the potatoes to your father. _____
Exercise 2: Identifying Dependent Clauses

Underline the dependent clause in each sentence below.

1. My friend, who does not have a dog, loves to play with mine.
2. I don’t know what happened yesterday.
3. Wherever Mason goes, he is loved by everyone.
4. If you agree to help, I won’t forget it.
5. The cat that has the white patches is mine.
6. Although it was raining, weplayed soccer.
7. The student whom I met in thelibrary is new.
8. Before you leave, please close the window.
Exercise 3: Simple vs. Compound Sentences

Write ‘S’ for Simple or ‘C’ for Compound next to each sentence.

1. Katy’s vacation to Hawaii was splendid. _____
2. She took tours of Oahu, Maui, and Kauai. _____
3. Visiting three islands was exhausting,but she loved every minute of it. _____
4. The favorite part of her trip was swimming with dolphins. _____
5. The gentle creatures snickered, and they seemed to inviteher to play. _____
6. The marine biologist taught visitors about dolphin behavior, so Katy listened carefully. _____
7. Dolphins are very intelligent, social creatures. _____
8. Katy did not see hair on the dolphins, so she was surprised to learn they are mammals. _____
Exercise 4: Complex Sentences Check

Write ‘Yes’ if the sentence is a Complex sentence (has a dependent clause) or ‘No’ ifit is not.

1. My sister’s hamster was very sick. _____
2. When I saw how sad Andrea was, I wanted to help. _____
3. I took Minnie to the veterinarian, even though I don’t like hamsters. _____
4. After examining Minnie, Dr. Rains gave her some medicine._____
5. Dr. Rains gave me more medicine to take home for Minnie. _____
6. I gave Minnie the medicine because Andrea couldn’t administer it properly. _____
7. Before we knew it, she was running on her exercise wheel._____
8. When Minnie began to perk up, Andrea perked up, too. _____
Exercise 5: Sentence Fragments

Turn the following fragments (dependent clauses) into complete sentences by adding an independent clause.

1. Because I didn’t write it on my calendar. ________________________________________________
2. That you wanted to read before I handed it in. ________________________________________________
3. Which was a big hit at the party. ________________________________________________
4. Since it is raining outside. ________________________________________________
5. Who was supposed to help me study. ________________________________________________
6. After the movie ended. ________________________________________________
7. If the team wins the game. ________________________________________________
8. Until the sun goes down. ________________________________________________
Exercise 6: Sentence Combining

Combine the two clauses to make a meaningful sentence. Use the conjunction provided if listed.

1. He felt sick yesterday. / He went to the doctor. (so) ________________________________________________
2. We might watch a movie. / We could play cards. (or) ________________________________________________
3. It was raining earlier today. / The soccer game began late. (so) ________________________________________________
4. She might call home. / She may write a letter. (or) ________________________________________________
5. The mechanic is fixing my car. / I’ll take the bus to work. (so) ________________________________________________
6. I am going to bed. / You should too. (and) ________________________________________________
7. Grant’s birthday is in April. / Selim’s is in May. (but) ________________________________________________
8. My favorite class is biology. / Shannon’s is geometry. (and) ________________________________________________
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