7. go back on one' s words 說話不算數(shù)

We cannot account on him. He always goes back on his words. 他那個人說話從不算數(shù),我們可不能依靠他。

Don' t be a person who goes back to his words. No one would like to make friends with him. 你不能做說話不算數(shù)的人，沒人愿意跟那樣的人做朋友。

8. beat one' s gums 廢話連篇

Who would enjoy sitting there listening to your beating your gums? 誰喜歡坐在那里聽你的廢話連篇？

He has nothing to do but to beat his gums all day. 他整天無所事事的，就知道講廢話。

9. bite the hand that feeds one 恩將仇報

Don' t you know she' s the one that would bite the hand that feeds her? 你難道不知道她是個恩將仇報的人？

He did this for you. How could bite the hand that feeds you? 他這么做全是為了你，你怎么能恩將仇報呢？

10. not have the heart to do 不忍心

If I were you, I wouldn' t have the heart to leave the kids at home uncared for. 如果我是你，我可不忍心把孩子們就在家里沒人照看

Never will I have the heart to hurt you. 我永遠不會忍心去傷害你。

11. an eager beaver 勤快

He' s an eager beaver, never staying idle. 他特別勤快，從來沒有閑著的時候。

The boy is an eager beaver. All of us like him. 他是個勤快的小伙子，大伙兒都喜歡他。