The usage of "Shang" can be summarized into two parts of speech: adverb when there is no object or other preposition behind it, and preposition when there is an object behind it. 1. means "to the destination" or "to the speaker's position". The bus is coming towards me. The bus conductor came to me. The main force has moved to the front. The main force went to the front. (destination) 2. It means "to (Li), to (Li) north, to (Li) center. Xiang (middle) residential area "and so on. Its antonym is down. He is on the roof now .. He is on the roof now. They are climbing the mountain. His home is in the north .. His home is in the north. The red army was moving towards. Resist the Japanese invaders .. The Red Army is going north to resist Japan. I'm going to Beijing next week. They sailed upstream .. and the overflow came back. When Chinese people travel in China. Those returned overseas Chinese are traveling in the mainland. He went shopping and will be home in an hour. He went to town to do some shopping. I'll be back in an hour. When up is paired with road/street, sometimes it doesn't mean "go north, go up", but it means: ① "along", which is equivalent to down or along, for example, I was walking up/down/forward along the road. I walk along the street. ② The upper part means "approach" and the lower part means "down". Just then, I saw some students coming from the street. Just then, I saw some students coming this way. I hurried down the steps and ran down the street, trying to catch up with him. In this sentence, down is a preposition and up is an adverb in verb-verb-verb. ) I hurried down the steps to the other side of the street, trying to catch up with him. Is he up yet? Is he up yet? No, he didn't. No. Time is up. (-Time is up. ) Time is up. When will your holiday end? Has your holiday expired? A walking fish can stay out of water for up to 20 hours. Walking fish can stay out of water for nearly 12 hours. 6. It's up to someone. Do sth. It means "someone is responsible for doing something". For example, it is up to me to decide to let the four of us move. It’s up to you. It’s up to you. 7. Used with verbs to express various meanings, such as: ① Used with some verbs to express "get up", set up to sit up and sail up and sail up and climb up, stand up and climb up, pick up, pull up, climb up and pile up, climb up, climb up and climb up. Upward (2) is used with some verbs to mean "(keep) on high ground", such as: hang (keep, stop, tie, fix, stay) Up (keep, stop, tie, fix, stay) is used with some transitive verbs to mean "complete or destroy". Cover up, cover up, drink up, chop up, cut off, dry up, eat up, wash up, wash up, fill up, ignite, make up, pack, tear up and tie up, use up, catch up with burning, burn off. Lock it up, lock it up, clean it up, wrap it up, wrap it up, wrap it up, wrap it up, wrap it up, wrap it up, wrap it up, wrap it up, wrap it up, wrap it up, wrap it up, wrap it up, wrap it up, wrap it up, decorate it up (blouses) go bankrupt, Destroy ... get on the bus 3) Absorb and dissolve 4) Start to adopt an attitude of ... and form a habit ... 5) Take up (time, place, attention) 6) Take over other people's business 7) Accept other people's challenges.