We have four periods of English a week.

我们每星期上四节英语课.

辞典例句

Play lasts for four periods of five minutes each.

比赛分4节,每节5分钟.

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The bitch's cycle is divided into four periods.

母犬的发情周期被分为一下四个阶段.

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We have four periods of art a week.

我们一周有四节美术课.

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We have four periods in the morning.

我们上午上四节课.

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I've been teaching four periods this morning.

今天上午我已教了四节课.

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