這不是動詞不定式的句型,
the key to 3 各單詞組成一個短語,
句型 The key to A is B 的意思是
A 的關(guān)鍵在于B
這個句型里
A 必須是名詞或名詞短語,B 可以是名詞,名詞短語或動詞不定式引導(dǎo)的名詞短語
比如
The key to success is hard work
A = success B = hard work
The key to doing something right is detailed planning and careful execution
A = doing something right B = detailed planning and careful execution
The key to doing anything well is to have a positive attitude
A = doing anything well B = to have a positive attitude