When does he have a Chinese class?

他什么时候上语文课？

youdao

When does he study English?

他什么时候学习英语。

youdao

When does he have English lessons?

他什么时候上英语课？

youdao

He says the companies that make vaccines cannot really do much when they have a virus that does not grow well.

VOA: special.2009.11.24

Milton's taking pains here, and he does this with very few other poems, to let us know precisely when it is that he's written it.

弥尔顿在这里极力想让我们，知道他确切的创作时间。

耶鲁公开课 - 弥尔顿课程节选

What does Socrates mean when he says his way of life has been devoted almost exclusively ? to private rather than to public matters?

当苏格拉底说,自己的生活方式,只专注在私人而非公共事务时,是什么意思？

耶鲁公开课 - 政治哲学导论课程节选

How does he do that, and when does he bring them back into the fold?

WHITEHOUSE: Press Briefing

When does he expect to reengage with Congress to if not deal with the debt ceiling, at least negotiate over the sequester?

WHITEHOUSE: Press Briefing by Press Secretary Jay Carney,

When does he plan to advance it to the Senate?

WHITEHOUSE: Press Briefing by Press Secretary Jay Carney,