反义疑问句!
There must be something strange in the lake.如何作反义疑问句
There must be something strange in the lake,isn't there? must 在这里是用来表示肯定的猜测的,变反意疑问句时可以不把它考虑在内。例如: 1.He must be watching TV, isn't he? 2.You must have watched TV last night, didn't you? 3.She must have read the book, hasn't she? 4.He must have a lot of money, doesn't he/hasn't he? 注意,2,3 句中,如果有过去时间,反意部分就用过去时形式;如果没有过去时间,反意部分用完成时形式。
答:此题选B。 there be句型的反意疑问句的做法: 1)主语永远/总是用there。 2)若be没有其他情态动词或(半)助动词修饰,就用be的适当形式;若be...详情>>
答:氧化铜有强氧化性,可以氧化CO,放出CO2。 氢氧化钠溶液,可与CO2反应:CO2+2NaOH=NaCO3+H2O 浓硫酸,有吸水性,水蒸气就没了。 最后只剩氮...详情>>
答:保修卡详情>>