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1. 动词以元音或浊辅音结尾时,后缀 “-ed” 读作 /d/。
played
used
paved
slowed
2. 动词以清音结尾时,后缀 “-ed” 读作 /t/。
looked
helped
cracked
3. 动词以 /t/ 或 /d/ 结尾时,后缀 “-ed” 读作 /ɪd/。
wanted
needed
printed
moulded
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