2）need 的用法
v.需要；必需
n.需要；必要；缺乏
aux.需要，必須（無時態、人稱變化，後與不帶 to 的動詞不定式連用，多用於疑問句和否定句）
用作動詞 (v.)
You look tired. You need a good rest.
妳看來累了。妳需要好好休息壹下。
If I need you to come and help, I'll call you.
如果我需要妳來幫忙,我會打電話的。
用作名詞 (n.)
The doctor told me I was in need of a good rest.
醫生對我說，我需要好好休息。
I feel a need to talk to you about it.
我覺得有必要跟妳談談那件事。