10. Write a complex sentence with two independent clauses.
Lesson 21 Problems with
Nouns
Recall from Lesson 4 in Part One (pages 27–37) that there are two main problems with
nouns. The first is forming plurals. The second is forming possessives. When you have to
form plural possessives, you are faced with both problems. This lesson provides some ex-
tra practice for both.
Plurals of Nouns
Rules for forming plural nouns were given in Lessons 4 (pages 28–34) and 10 (page
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