1. Simple Sentences & Compound Sentences Unit 2

2. Cross out the boldfaced conjunction in each sentence. Which sentence could be written as two separate sentences? Note: conjunction- a word used to connect clauses or sentences or to coordinate words in the same clause (e.g., and, but, or). 1.Some deserts were once forests or lakes. 2.Some dry lands are becoming deserts, and some deserts are spreading.

3. Simple and Compound Sentences Simple sentence: Made up of a subject and a predicate and expresses only one complete thought. Compound sentence: Made up of two closely related independent clauses. The two clauses can be joined by a comma and a coordinating conjunction (and, but, or) or by a semicolon (;)

4. Write S next to each simple sentence. Write CS next to each compoud sentence. Circle the comma and conjunction or semicolon in each compound sentence. Not all dry regions are deserts, but all dry regions are fragile ecosystems. Not all dry regions are deserts, but all dry regions are fragile ecosystems. CS Desertification refers to the process of dry areas becoming deserts. Desertification refers to the process of dry areas becoming deserts. SS

5. Rewrite each pair of simple sentences as one compound sentence. Scientists have studied the formation of deserts. They do not completely understand the process yet. Scientists have studied the formation of deserts, but they do not completely understand the process yet. Some deserts form because of human activity. Others form naturally. Some deserts form because of human activity; others form naturally.

6. Write S next to each simple sentence. Write CS next to each compoud sentence. Circle the comma and conjunction or semicolon in each compound sentence. Water is lost off the land instead of soaking into the soil to provide moisture for plants; this leads to reduced plant and animal life. Areas with fewer plants cannot sustain existing animal populations; these populations then begin to disappear. The dry heat also affects the delicate ecosystem.

7. Write S next to each simple sentence. Write CS next to each compoud sentence. Circle the comma and conjunction or semicolon in each compound sentence. Water is lost off the land instead of soaking into the soil to provide moisture for plants; this leads to reduced plant and animal life. CS Areas with fewer plants cannot sustain existing animal populations; these populations then begin to disappear. CS The dry heat also affects the delicate ecosystem. S