1、You cannot burn the candle at both ends.

    蜡烛不能两头点，精力不可过分耗。

    2、You cannot eat your cake and have it.

    鱼与熊掌，不可得兼。

    3、You can take a horse to the water but you cannot make him drink.

    强扭的瓜不甜。

    4、You may know by a handful the whole sack.

    由一斑可知全貌。

    5、Where there is a will, there is a way.

    有志者事竟成。

    6、Where there is life, there is hope.

    留得青山在，不怕没柴烧。

    7、Where there is smoke, there is fire.

    事出有因。

    8、What we do willingly is easy.
   
    愿者不难。

    9、Whatever you do, do with all your might.

    不管做什么，都要一心一意。

    10、Water dropping day by day wears the hardest rock away.

    滴水穿石。

    11、Tomorrow never comes.

    我生待明日，万事成蹉跎。

    12、Time and tide wait for no man.

    时不我待。

    13、Time flies.

    光阴似箭。

    14、There is no royal road to learning.

    书山有路勤为径，学海无涯苦作舟。
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