对 several hours 提问用how soon 还是how long?

对 several hours 提问用how soon 还是how long? 对five hours提问 对two hours提问 和对 for two hours提问 都是用how long吗 为什么 求问对never和several提问用什么 对for two hours提问,用什么词 The mesl will take two hours 用how long 对two hours 提问 用how long对i finished my homework two hours ago中的two hours ago提问 He works for tow hours(对for tow hours提问) tom has been to shanghai several times 否定句一般疑问句对划线部分提问 划线部分是 several times 用how ofter提问 We have seen the same doctor several times.(对划线部分提问,划 several times） Uncle Wang flew to New York several days ago.（对several days ago提问） The meal will take （two hours）.(用how long 对划线部分提问） 用how long对括号部分提问the meal will take (two hours). She sleeps (seven) hours every day 对划线部分提问 the students play volleyball (for two hours)对括号提问 She sleep nine hours every night 对nine提问 she usually dances for two hours对画线提问 Elephants only sleep four hours at night 对four提问