后缀
Suffixes
掌握需要改变词根的后缀拼写规则：在以元音开头的后缀前省略末尾不发音的e，把-y变成-i，在短元音单词中双写末尾辅音；使用后缀 -ment、-ness、-ful、-less、-ly
Apply suffix spelling rules that require changes to the root word: dropping final -e before vowel suffixes, changing -y to -i, doubling final consonants in short-vowel words; use suffixes -ment, -ness, -ful, -less, -ly
学习证据 / Evidence
- 能应用正确规则拼写“hoping”（去掉e）、“cried”（y变i）、“running”（双写辅音）
- 能正确添加 -ful、-less、-ness、-ly：如“careful”、“hopeless”、“sadness”、“slowly”
- 能判断给定词根应使用哪条后缀规则，并说明理由
- Spell 'hoping' (drop e), 'cried' (y to i), 'running' (double consonant) applying the correct rule
- Add -ful, -less, -ness, -ly correctly: 'careful', 'hopeless', 'sadness', 'slowly'
- Identify which suffix rule to apply to a given root word and explain why
评估问题 / Assessment
当{{name}}给一个词加上像“-ing”或“-ed”这样的结尾时，是否知道什么时候要省略不发音的“e”、双写最后一个字母，或者把“y”变成“i”——例如“running”、“baked”或“happily”？
When {{name}} adds an ending like "-ing" or "-ed" to a word, do they know when to drop a silent "e," double the last letter, or change a "y" to an "i" — for example, "running," "baked," or "happily"?