Is和does的用法

IS

[ɪz]

abbr.撞击开关(Impact Switch)；现用的(In Service)；不完整序列（中继）(Incomplete Sequence)

英文例句/中文翻译：

1、

Studying for new qualifications is one way of advancing your career.

为提高学历而进修是促进事业发展的一个办法。

《牛津高阶英汉双解词典》

2、

Commuting is a part of daily life for many people.

乘车上下班是许多人日常生活的一部分。

《牛津高阶英汉双解词典》

3、

It was concluded that the level of change necessary would be low.

结论是，需要作出的变更程度很低。

《牛津高阶英汉双解词典》

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