We need to keep the environment clean.
We need to make our city more beautiful.
***貓迷英語專家團提供【Real.American.English.】不是需要need，用should可以翻譯嗎need 也有應該的意思。如果非用should不可。就把need to換掉即可。那不就兩個動詞了嗎We should keep the environment clean.We should make our city more beautiful.高樓隨處可見怎么翻譯Tall buildings can be seen everywhere.There are lots of building everywhere。對嗎building后面加s，因為是復數(shù)。高樓 tall buildingsThere are lots of tall buildings everywhere?？梢缘?。