2025MBA報考測評申請中......
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導讀：英語對MBA考研的重要性不言而喻。英語是不少考生們都頭疼的科目,單詞多、語法多、長難句多。為了幫助2020考研er在準備階段更好的積累語法知識，今天小編為大家說一說考研英語語法知識點時態(tài)。
動詞的時態(tài)=時+態(tài).“時”指動作或狀態(tài)所發(fā)生的時間,分為現(xiàn)在、過去、將來、過去將來四種.“態(tài)”指動作進行的狀態(tài),分為一般、進行、完成或完成進行四種.
一、時態(tài)的變化
1.文中出現(xiàn)時態(tài)變化
(2008,text2)第一段首句:It used to be so straightforward.A journal editor would then remove the authors’names and affiliations(關(guān)系)from the paper and send it to their peers for review.
第二段首句:No longer.The Internet...is making access to scientific results a reality.
2.題中出現(xiàn)時態(tài)變化
(2006,text 2)Stratford cries poor traditionally.Nevertheless every hotel in town seems to be adding a new wing or cocktail lounge.
28.By saying“Stratford cries poor traditionally”(Line 2-3,Paragraph 4),the author implies that________.
[A]Stratford cannot afford the expansion projects
[B]Stratford has long been in financial difficulties
[C]the town is not really short of money
[D]the townsfolk used to be poorly paid
【答案】C
二、虛擬語氣
虛擬語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,所說的是一個條件,不一定是事實,或與事實相反.虛擬語氣常見的表達形式和考查方式如下文.
1.表示與現(xiàn)在事實相反
從句:If主語+過去時
主句:主語+should/would/could/might+do
If I were a bird,I could fly high.
常見變體:if省略,句子倒裝
例:Were I a bird,I could hardly fly high.
2.表示與過去事實相反
從句:If主語+had+done
主句:主語+should/would/could/might+have done
例:You should have known better than to make such a ridiculous mistake.
你不至于糊涂到這個地步犯這種荒謬的錯誤啊.
三、語態(tài)
動詞的語態(tài)包括主動語態(tài)和被動語態(tài).在主動語態(tài)中,主語是動作的執(zhí)行者或狀態(tài)的主體;在被動語態(tài)中,主語是動作的承受者,主語和謂語動詞之間是被動關(guān)系.由于在被動語態(tài)中,主語相當于謂語動詞的邏輯賓語,所以只有及物動詞可以用被動語態(tài),而不及物動詞沒有被動語態(tài).
被動語態(tài)的構(gòu)成為:系動詞+過去分詞.如果要說明動作發(fā)出者,則由介詞by引出,置于動詞的過去分詞之后.被動語態(tài)的時態(tài)變化由系動詞加以體現(xiàn).
例:
They will open a new supermarket there soon.→A new supermarket will be opened there soon.
The doctor gave two lectures in English.→Two lectures were given by the doctor in English.
