want = 想要，in sometimes 想 = 想要 but e.g. I want to get a shoes 我想要一双鞋 想要 ≠ 想 同理 will = 将会 ，sometimes 会 = 将会 I will go to China = 我要去中国了 = 我将要去中国 need = 需要 e.g. You need a coat in this winter I need to go to China “需要”不能拆分来说 must = 必须 e.g. 我必须走了 = 我必须得走了 It means a tough attitude 我得走了 Its not tough than 我必须走了