Lesson 27 Words ending with ous/us and ize/ise

marvel + ous	= marvelous	real + ize	= realize
industry + ous	= industrious	critic + ize	= criticize
adventure + ous	= adventurous	apology + ize	= apologize
courage + ous	= courageous	memory + ize	= memorize
outrage + ous	= outrageous	sympathy + ize	= sympathize
	virus		despise
	circus		televise
	census		exercise
	genius		advertise
	surplus		compromise

All of the words in the first column end with the same sound.

1.	What suffix is added to make the first five words? _____ Is the suffix added to complete words or to roots? _____ When it is added to adventure, what happens to the final silent e ? _____ Why is the final silent e kept in courageous and outrageous ? ________________________________________________________________
2.	What are the last two letters of the next five words in the first column? _________________________________________________ All of the words in the second column end with the same sound.
3.	What suffix is added to make the first five words? _____ Is the suffix added to complete words or to roots? ______
4.	What are the last three letters of the next five words? _____________

Lesson Generalization The suffix ous is added to words to form adjectives meaning "full of" or "having certain characteristics." adventurous - full of adventure The us spelling is not a suffix. It is a noun ending. The suffix ize is added to words to form verbs meaning "to make or become." apologize - to make an apology The ise ending is not a suffix.

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Grade 7 Spelling SkillBuilders