名詞變複數和動詞的三單形式可不一定都發S這個音，也可能發Z這個音。下面小編帶大家一起來區分一下，看圖。（主要是為了刺激你的荷爾蒙，提升你的記憶力，理解力）

Rule 1

If a word ends in a sound that is unvoiced (such as P, T, K, F), you add an unvoiced /S/

Examples:

1 cup, 2 cups (the p in cup is unvoiced, so you just add an unvoiced s)

1 cat, 2 cats (the t in cat is unvoiced, so just add an unvoiced s)

Rule 2

If a word ends in any of these sounds: s, z, sh, ch, or dg (j), when adding an S ending, addIZZZZZZ

Examples:

1 Page 2 Pages

1 Bus 2 Buses

1 Lunch 2 Lunches

I Raise, He Raises

I Brush, He Brushes

I Push, He Pushes

Rule 3

If a word ends in a vowel sound (like the word Tree) or a voiced consonant (like the word Game), then when you add an S, continue the voicing throughout the entire word, and it should become a voiced ZZZZ.

Examples:

1 Tree, 2 Treezzzz (correctly spelled Trees)

1 Day, 2 Days

1 Shoe, 2 Shoes

I Fly, He Flies

1 Game, 2 Games

1 Head, 2 Heads

1 Train, 2 Trains

1 Song, 2 Songs

Some common words where S’s are pronounced as Z’s

IS

HIS

AS

WAS

THESE

THOSE

EASY

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