第1个回答 2011-07-31
Three rules for S&Z endings
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)
I break, he breaks
I stop, he stops
Rule 2
If a word ends in any of these sounds: s, z, sh, ch, or dg (j), when adding an S ending, add IZZZZZZ
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
BECAUSE