7. Face
Face has to do with the idea of respect and dignity both in Chinese and English. You lose your face (丢面子) if you fail again and again, but a decisive victory will save your face (挽回面子) after all your failures.
When you feel unhappy, you pull a long face (拉长脸). The idea is conveyed in Chinese in the same way. But "about face (向后转)" does not refer to the face. It is a military order to turn round and face in the opposite direction. It is the exact equivalent of " about turn".
8. Shoulder
The shoulders can bear heavy things. Your father has a great responsibility for the family on his shoulder. When faced with difficulty, the family should stand shoulder to shoulder (肩并肩) to overcome it. You should not turn a cold shoulder (不理睬) to your family members. Nor should you give your friends the cold shoulder (冷落朋友). Both expressions mean treating others coldly.
9. Back
A good host is hospitable to his guests. But, if guest is tiresome, the host is glad to see his back (他离开).
If your friend has done something really well, you may give him a pat on the back (轻轻拍背部) to show your appreciation.
If you turn your back on somebody (不理睬他人), you mean you do not like making friends with that person.
10. Heart
The heart is an extremely important organ inside the chest. It usually stands for something important or the centre of something, for example, the heart of the matter (问题的核心) or the heart of mystery.
Many other expressions make use of the word heart. A lover can be called a sweet heart (情人). The Purple Heart (紫心徽章) is a medal given as an honor to American soldiers wounded in battle.
If your friend is in trouble, you may encourage him by saying "Don't lose heart (不要灰心)."
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