在英语写作中恰当地使用俗语可以使文章显得更加生动、有趣，并且能够增强语言的表现力。以下是一些常用的英语俗语及其含义：

Practice makes perfect.熟能生巧。

God helps those who help themselves.天助自助者。

Easier said than done.说起来容易做起来难。

Where there is a will, there is a way.有志者事竟成。

Well begun is half done.好的开端是成功的一半。

East, west, home is best.金窝、银窝，不如自己的草窝。

First think, then act.三思而后行。

It is never too late to mend.亡羊补牢。

Actions speak louder than words.事实胜于雄辩。

Don't count your chicken before they are hatched.不要过早乐观。

Don't climb a tree to look for fish.勿缘木求鱼。

Don't cross the bridge till you get to it.不要杞人忧天。

Don't fly till you wings are ready.不成熟时不轻举妄动。

A bad beginning makes a bad ending.不善始者不善终。

A bad thing never dies.遗臭万年。

A bad workman always blames his tools.不会撑船怪河弯。

A bird in the hand is worth than two in the bush.一鸟在手赛过双鸟在林。

No pains, no gains.没有付出就没有收获。

Constant dripping wears away the stone.滴水穿石。

A man can do no more than he can.凡事都应量力而行。

A man cannot spin and reel at the same time.一心不能二用。

The best fish swim near the bottom.好鱼常在水底游。

Never offer to teach fish to swim.不要班门弄斧。

Go to the sea, if you would fish well.不入虎穴，焉得虎子。

There’s as good fish in the sea as ever came out of it.海里的好鱼多的是。

It is a silly fish that is caught twice with the same bait.智者不上两次当。

If water is noisy, there are no fish in it.咆哮的水中无鱼。

在使用这些俗语时，要注意它们的语境和适用性，确保它们与文章的主题和风格相符合。通过恰当地使用这些俗语，可以使你的英语写作更加地道和生动。