虛擬語(yǔ)氣 虛擬語(yǔ)氣用來表示說話人的主觀愿望或假想,而不表示客觀存在的事實(shí),所說的是一個(gè)條件,不一定是事實(shí),或與事實(shí)相反。虛擬... [查看全文]
didn't need to do表示: 過去不必做某事, 事實(shí)上也沒做。. needn't have done表示: 過去不必做某事, 但事實(shí)上做了?!ohn went to the station with the... [查看全文]
It is (high) time that 后面的從句謂語(yǔ)動(dòng)詞要用過去式或用should加動(dòng)詞原形,但should不可省略?!?It is time that the children went to bed. It is high time that the children should go to bed. [查看全文]
only if表示"只有";if only則表示"如果……就好了"。If only也可用于陳述語(yǔ)氣?! wake up only if the alarm clock rings. 只有鬧鐘響了,我才會(huì)醒?!?.. [查看全文]
1)用于wish后面的從句,表示與事實(shí)相反的情況,或表示將來不太可能實(shí)現(xiàn)的愿望。其賓語(yǔ)從句的動(dòng)詞形式為: 真實(shí)狀況 wish后 ... [查看全文]
1) It is demanded / necessary / a pity + that…結(jié)構(gòu)中的主語(yǔ)從句的謂語(yǔ)動(dòng)詞要用should 加動(dòng)詞原形, should 可省略。句型: (1)suggestedIt is ... [查看全文]
虛擬條件句的從句部分如果含有were, should, 或had, 可將if省略,再把were, should或had 移到從句句首,實(shí)行倒裝?!?Were they here now, they could help ... [查看全文]
主句與從句的動(dòng)作發(fā)生在不同的時(shí)間,這時(shí)主,從句謂語(yǔ)動(dòng)詞的虛擬語(yǔ)氣形式因時(shí)間不同而不同,這叫做混合條件句?! f you had asked him yesterday, you would k... [查看全文]
1)時(shí)態(tài):可以表示過去,現(xiàn)在和將來的情況。它的基本特點(diǎn)是時(shí)態(tài)退后。 a. 同現(xiàn)在事實(shí)相反的假設(shè)。句型 : 條件從句 主句 一般過去時(shí) should(... [查看全文]
真實(shí)條件句用于陳述語(yǔ)氣,假設(shè)的情況可能發(fā)生,其中 if 是如果的意思?!? 時(shí)態(tài)關(guān)系句型: 條件從句 主句 一般現(xiàn)在時(shí) shall/will + 動(dòng)詞原形 ... [查看全文]