莎士比亚的十八行诗，即Sonnet 18，是一首非常著名的英诗。以下是其全文：

Shall I compare thee to a summer's day？

Thou art more lovely and more temperate:

Rough winds do shake the darling buds of May,

And summer's lease hath all too short a date:

Sometime too hot the eye of heaven shines,

And often is his gold complexion dimmed；

And every fair from fair sometime declines,

By chance, or nature's changing course untrimmed:

But thy eternal summer shall not fade,

Nor lose possession of that fair thou ow'st；

Nor shall Death brag thou wander'st in his shade,

When in eternal lines to time thou grow'st:

So long as men can breathe or eyes can see,

So long lives this, and this gives life to thee.

这首诗以夏天为背景，通过对比，赞美了爱人的美丽和永恒。诗中提到，尽管夏天有时炎热、阳光强烈，甚至花朵会被狂风吹落，但爱人的美丽却像永恒的夏天一样，不会消逝，也不会因时间的流逝而减少。诗人通过这种对比，表达了对爱人永恒之美的赞美和敬仰。

在翻译时，需要注意将诗中的季节意象从夏天正确翻译为春天，以保持原诗的意义和情感。例如，“thy eternal summer”应翻译为“你永恒的春天”，“And summer's lease hath all too short a date”应翻译为“而夏日的期限又这样短暂”。