拼写 -able 与 -ible

学习拼写以 -able/-ible 结尾的单词，以及对应的副词形式 -ably/-ibly，并运用规律根据词根判断该使用哪个后缀。

Spell words ending in -able/-ible and the corresponding adverb forms -ably/-ibly, applying patterns to determine which suffix to use based on the root word

学习证据 / Evidence

• 运用这条规律：-able 通常加在完整的词根后（如 enjoyable、comfortable），而 -ible 通常加在不完整的词根后（如 visible、possible），同时记住重要的例外情况。
• 将 -able/-ible 形容词变成副词时，把结尾改为 -ably/-ibly，例如 comfortable → comfortably，possible → possibly，terrible → terribly。
• 判断在加 -able 时是去掉词根末尾的 -e 还是保留它，例如 adorable（去掉 e）和 changeable（在软 g 前保留 e）。

• Apply the guideline that -able is typically used with complete root words (enjoyable, comfortable) while -ible is used with incomplete roots (visible, possible), noting key exceptions
• Convert -able/-ible adjectives into adverbs by changing the ending to -ably/-ibly, e.g. comfortable → comfortably, possible → possibly, terrible → terribly
• Determine whether to drop or retain the final -e of the root when adding -able, e.g. adorable (drop e) vs changeable (keep e before soft g)

评估问题 / Assessment

当 {{name}} 需要拼写一个以“-able”或“-ible”结尾的单词——比如“comfortable”或“visible”——他们能选对正确的后缀并拼写正确吗？

When {{name}} needs to spell a word ending in "-able" or "-ible" — like "comfortable" or "visible" — can they choose the right ending and spell it correctly?