when she gives a party, she won't have to be shy.won't have to be 怎么理解?

问题描述:

when she gives a party, she won't have to be shy.won't have to be 怎么理解?
句子怎么翻译的?

have to do 本来是不得不去做的意思.有些强迫.
have to be是有必要的意思.
won't 是否定,就是说没有必要的意思.