宿舍里沒有燈光,他們必定是去聽講座了,不是嗎?
這兒的反意疑問句中must have done 是表推測判斷的,have作助動詞,類似于do 的用法,故用haven't they.類比They cannot have gone to the lecture,have they?（否定的推測與判斷）
there is no light in the dormory(宿舍).They must have gone to the lecture,___?A.didn't they B.haven't they答案是B可是為什么啊
there is no light in the dormory(宿舍).They must have gone to the lecture,___?A.didn't they B.haven't they答案是B可是為什么啊
英語人氣：201 ℃時間：2019-08-20 06:08:35
優(yōu)質解答
我來回答
類似推薦
- there is no light in the dormory(宿舍).They must have gone to the lecture,___?A.didn't they B.haven't they
- ——the farms have been to the US.___really?when there?a.did they go b.have they gone
- There is none here,they must have gone to school意疑問句是什么
- When there is a green light,cars may go on.When there is a red light,cars must (s ).They must wait
- there is no light on.They （ ）be at home.
- 因式分解a2c2-b2c2-a4+b4
- 賦比興的舉例
- 一般的,二次根式的運算結果中,被開方數(shù)中不應含_____的因數(shù)或因式
- 兩數(shù)相除,如果除數(shù)擴大5倍,要使商縮小5倍,被除數(shù)應怎樣變化?
- 我十一點半吃午飯 用英語怎么說
- 為什么高爾基復合體是膜分化中間階段
- 1.若｛An｝是等差數(shù)列,首相A1＞0,A2003＋A2004＞0,A2003×A2004＜0,則使前n項和Sn＞0成立的最大自然數(shù)是多少?
猜你喜歡
- 1凸輪軸位置傳感器的作用是什么?
- 2一項工作,甲單獨做需要15天完成,乙單獨做需要12天完成,這項工作由甲、乙兩人合做,并且施工期間乙休息6天,問幾天完成?
- 3求成語中有teng（二聲）字音的成語
- 4用一首古詩改編成短文
- 5Don not talk.I am busy______TV.A.to watch B.watch C.watches D.watching
- 6SOE are,on average,less productive and have better access to external credit
- 70.346,46(循環(huán))化成分數(shù),用算式求
- 8讓理想飛得更遠 400字作文
- 9x-3 a -1 4 5 x-8 0 -2 0 b x+1 1 2 2 1 x 此行列式中x^3的系數(shù)為什么是-10?
- 10無色試液中加入硝酸酸化的硝酸銀溶液有沉淀產生結論原試液中一定含有氯離子
- 11判斷題：科學家已經有證據(jù)表明,丙烯酰胺能夠使人患上癌癥.油炸食品中含有較多的丙烯酰胺
- 12chat on the line 有在電話里聊天的意思么?