extra-主題

extra

['ekstrə]

adj.額外的 
n.額外之物, 臨時演員 
adv.特別地

例句與用法：

Luggage in excess of 100 kg will be charged extra.

超過100公斤的行李要額外收費。

I'm so envious of you getting an extra day's holiday.

我真羨慕你得到一天額外的假期。

The teacher disciplined the class by giving them extra homework.

那教師佈置額外的家庭作業來處罰學生。

He paid the extra cost without a murmur.

他付了額外的費用而毫無怨言。

This dress is of extra fine quality.

這件衣服的質地特別好。

There were so many people that the company put on extra buses.

人數太多，公司加開了公共汽車。

英文解釋:

名詞 extra:

a minor actor in crowd scenes

同義詞：supernumerary, spear carrier

an additional edition of a newspaper (usually to report a crisis)

something additional of the same kind

同義詞：duplicate

形容詞 extra:

more than is needed, desired, or required

同義詞：excess, redundant, spare, supererogatory, superfluous, supernumerary, surplus

added to a regular schedule

同義詞：special

further or added

同義詞：additional

副詞 extra:

unusually or exceptionally

以上來源於大辭典