seem的過去式(seem后面的動詞用什么形式，并請說明每一種形式的使用情況)

1. seem+形容詞Everything seems easy.一切似乎很容易。2. seem+名詞He seemed an honest man.他看上去像是個老實人。This seemed to us an ideal plan.我們感到這是個完美的計劃。3. seem+不定式The maths problem seems to be very difficult to work out.這道數(shù)學(xué)題似乎很難解決。I seem to have caught a cold.我好像是感冒了。4. seem+過去分詞Our teacher seemed stopped by the question.我們的老師似乎是被那個問題難住了。His story seemed revealed.他的謊言似乎已被揭露。

seem相當(dāng)于系動詞 在英語所有的連系動詞中,除了be這個最常見的外,seem應(yīng)該算是最常見的連系動詞之一.而對于seem的用法,許多同學(xué)有個誤解,就是以為seem后接表語時,表語前可隨意地加上to be,也可隨意地去掉to be.其實,seem后to be的省略和保留有不少講究和值得注意的地方,本文歸納以下五種情況,供同學(xué)們參考.一、后接形容詞時 當(dāng)seem后接形容詞作表語時,如果談的是客觀事實,即看上去肯定是真實的東西,通常用seem to be；如果談的是主觀印象,則通常只用seem.但由于這種區(qū)別在沒有上下文的情況下并不總是很清楚,所以在許多情況下兩個結(jié)構(gòu)均可以用.如：He seems (to be) ill.他似乎生病了.He seems (to be) quite happy.他似乎很高興.He seems (to be) quite rich 他似乎相當(dāng)富有.She seems (to be) very sleepy today.今天她看上去很困倦.但在有些情況下,由于其語境比較特殊,可能用其中一個結(jié)構(gòu)比另一個結(jié)構(gòu)更合適,如下面一句中的seems后最好不用to be：He seems older than he is.他看上去比實際年齡大.二、后接名詞時 在名詞前通常要用seem to be(尤其是當(dāng)名詞前帶有定冠詞或物主代詞修飾時),如以下各句中的to be均不能省略.如：He seemed to be the owner of the car.他好像就是車主.I spoke to a man who seemed to be the boss.我跟一個人說話,他看上去像是老板.Washing the car seems to be your main hobby.洗車似乎是你的主要愛好.但是,在著重表現(xiàn)主觀感受的名詞短語前,有時可以省去to be.此時名詞前通常會有一個描繪性形容詞修飾.如：It seems (to be) a good idea.那似乎是個好主意.It seems (to be) a real bargain.這東西似乎很便宜.下面一句中的fool前雖然沒有形容詞修飾,但a fool本身相當(dāng)于形容詞foolish：He seems (to be) a fool.他似乎是個笨蛋.三、后接非謂語動詞時 后接不定式的被動式時,有時可以省略to be,而只保留過去分詞(尤其是當(dāng)其中的過去分詞可用作形容詞時更是如此).如：Ann and Robert seem (to be) made for each other.安和羅伯特真似天生的一對.She didn’t seem (to be) convinced by the argument.這個論點似乎沒有使她信服.但后接不定式的進行式時,通常不能省略to be,因為seem后習(xí)慣上不接現(xiàn)在分詞作表語.所以,下面各句中的to be均不宜省略：He seems to be saying something.他似乎在說什么.History seems to be repeating itself.歷史似乎在重演.His health seems to be improving little by little.他健康狀況看來正在好轉(zhuǎn).注：如果seem to be doing sth結(jié)構(gòu)中的doing 不是現(xiàn)在分詞,而是形容詞,則可省略其中的to be.如：His idea seems (to be) exciting.他的主意看來令人激動.She seemed (to be) lacking in enthusiasm.她似乎缺乏熱情.四、用于there be結(jié)構(gòu)時 當(dāng)seem用于there be結(jié)構(gòu)時,其通常的表現(xiàn)形式為There seems to be…,其中的to be可以省略,也可以保留,但以保留為多見.如：There seems to be something wrong here.這兒好像有點不大對勁.There seems to be a mistake in these figures.這些數(shù)字中好像有個錯誤.There seemed (to be) nobody about,so I went in.附近似乎沒有人,因此我就走了進去.There seems (to be) every reason to believe that business will get better.看來完全有理由相信生意會轉(zhuǎn)好.注：省略to be后,seem便直接充當(dāng)了be的作用.五、后接表語形容詞時 在作表語用的以a-開頭的形容詞前通常不能省略to be.

答案：seemed to?spread faster．結(jié)合后面的?had?expected是過去完成時，故前面用一般過去時，表示似乎要做某事用seem to do sth，seem 的過去式是seemed，傳播spread，表示更快用比較級faster，故答案是seemed t...

seem to do sth 似乎做；好像
Some people seem to do it as a hobby.
有些人這樣做好像僅僅是一種消遣.

不可以的。非謂語動詞一定是實義動詞，而seem是系動詞，詳解如下。非謂語動詞，又叫非限定動詞，非謂語動詞是指在句子中不是謂語的動詞，主要包括不定式、動名詞和分詞（現(xiàn)在分詞和過去分詞），即動詞的非謂語形式。常與不定式做賓語連用的動詞有：want,hope,wish,offer,fail,plan,learn,pretend,refuse,manage,help,agree,promise,prefer,如果不定式（賓語）后面有賓語補足語，則用it作形式賓語，真正的賓語（不定式）后置，放在賓語補足語后面。