1. 認識這個詞（基礎篇）
詞：backbone
英英釋義：courage and determination
例句：He has a crush on Sarah, but doesn't have the backbone to ask her out.
2. 體會這個詞 （進階篇）
“backbone”是名詞，最基本的意思是“脊柱”“脊骨”，也常被引申表示“支柱”（比如支柱產業中的“支柱”）和“勇氣/膽量”。我們今天學習它作“膽量”的意思。它作“膽量”時是不可數名詞，可以替換我們常用的“courage”。
He has a crush on Sarah, but doesn't have the backbone to ask her out.
He has enough backbone to take up the Ice Bucket Challenge.?
3. 從認識到會用（作業）
1）翻譯下面的句子：
他沒有膽量，在最后一刻放棄了獎學金申請。
He doesn't have the backbone and quit the scholarship application? at the last minute.
造句:The boy has a crush on his classmate, but he doesn't have the backbone to tell her.
