[請益] 哪些狀況下if跟whether可以混合使用
想請教if跟whether所引導的子句的問題，
哪些狀況下if跟whether可以混合使用，哪些狀況下不能用if，
看了文法書仍無法完全掌握其精髓，
例如，
１。”告訴她他是否喜歡動物。”
我知道可用
Tell her ”whether” he likes animals.
那此狀況是否可用if代替whether呢？
↓
Tell her ”if” he likes animals.
２。”我不知道這個新聞是否為真。”
我知道可用
I don't know ”whether” the report is true.
那此狀況是否可用if代替whether呢？
↓
I don't know ”if” the report is true.
重要的是，該怎麼判斷哪些情況下if跟whether可以混合使用呢？
３。請問這句子正確嗎？
His dream is building a castle with a garden.
謝謝。
※ 編輯: lungz2007 來自: 163.29.241.234 (09/16 11:22)
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