IXL | Form and use plurals: review | 9th grade language arts

Complete the sentence with the correct plural.

Okapis—animals with reddish-brown backs and white stripes on their legs—may resemble zebras, but they are actually more closely related to iiiiiiiiiiiiiiiiiiiiiigiraffe

ref_doc_title.

Learn with an example

question

Complete the sentence with the correct plural.

Submarine iiiiiiiiiiiiiiiiiiiiiiiiiifvolcano formed underwater—can grow so large that they break through the surface of the ocean and create islands. The Hawaiian Islands are a well-known example of such an occurrence.

key idea

To form the plural of most nouns, add -s.

one tree → two trees

If a noun ends in -s, -ch, -sh, -x, or -z, then add -es to make it plural.

one bush → two bushes

If a noun ends in consonant-y, then drop the y and add -ies to make it plural.

one baby → two babies

If a noun ends in -f or -fe and the /f/ sound changes to /v/ when it's plural, drop the -f or -fe and add -ves to make it plural.

one wolf → two wolves

If a noun ends in -f or -fe and the plural form keeps the /f/ sound, just add -s to make it plural.

one chef → two chefs

If a noun ends in -o, usually add -s to make it plural. However, add -es for the following exceptions: tomato, potato, hero, echo, tornado, volcano, and mango.

one piano → two pianos

one tomato → two tomatoes

solution

The noun volcano ends in -o. With this noun, add -es to make it plural. The plural of volcano is volcanoes.

$Confetti$

Excellent!

Now entering the Challenge Zone—are you ready?

Questions
answeredQuestions

Time
elapsedTime

hr	min	sec
00	00	06

SmartScore
out of 100
IXL's SmartScore is a dynamic measure of progress towards mastery, rather than a percentage grade. It tracks your skill level as you tackle progressively more difficult questions. Consistently answer questions correctly to reach excellence (90), or conquer the Challenge Zone to achieve mastery (100)! Learn more

Teacher tools

Work it out

Not feeling ready yet? This can help:

GG.5Form and use plurals: review

Excellent! You got that right!

Jumping to level 1 of 1

Excellent!