9. Astronomers at the Palomar Observatory have discovered a distant supernova explosion, one that they believe is a type previously unknown to science.
A. that they believe is
B. that they believe it to be
C. they believe that it is of
D. they believe that is
E. they believe to be of
1. 為什么不能是that
當(dāng)先行詞做定語從句的賓語，that 可以省略 one ( that ) they believe to be …….
2. 代詞:it 多余。
One that they believe it to be / One that they believe that it is ………
believe 后面已經(jīng)有邏輯賓語 one ,it 多余
3. 平行結(jié)構(gòu)：
A is B A/B 要平行對等，
此處 one(explosion ) is a type previously unknown to science. Explosion 不能是 a type. 可以是one of a type
4. 詞法believe X to be Y / believe that ……
觀點一to be比is在表示時間方面要好. 因為is是他們一直都這么認(rèn)為, 時間概念太明確, 然而, TO BE就有模糊性, 所以這個題目里頭OG說In the context of this sentence, the infinitive to be is more appropriate than the limited present-tense is in referring to an event that occurred long ago but has been discovered only recently.
觀點二
這題偶的理解比較單純，explosion, the one they believe to be of a type. 定語從句，
先行詞還原到定語從句結(jié)構(gòu)中就是： they believe the explosion to be of a type.....
根據(jù)believe 的兩種用法：
believe that ..... 和believe sth to be sth.....這里附和第二種用法。很自然的排除用限定性結(jié)構(gòu)，（包括沒有that, 直接用is 的結(jié)構(gòu)。）
不過語言有很大的約定俗成的部分，即某種結(jié)構(gòu)本身就帶有某種含義。的辦法是: 記住，形成習(xí)慣性思維，直到成為語感?？吹侥撤N結(jié)構(gòu)就覺得應(yīng)該是這個意思。
下列動詞接toV時總是用被動
allege, assume, claim, consider, deem, feel, find, know..., believe, ...
他們表示言談，想法或發(fā)現(xiàn)時，後面常接 to be 或 to have Vpp
that如果引導(dǎo)賓語從句, 一定不能省略.
that如果引導(dǎo)定語從句: 1. 如果that在從句里做主語, 不能省略; 2. that在從句里做賓語, 省略.
但上面的2在OG里有反例. 243就是that做后面的賓語而不省略的. 這并不是ETS自相矛盾, 而是補出that避免歧義. 所以, 沒有絕對的規(guī)律, 只有相對的正確, 因為語言的魅力在于靈活
A. that they believe is
B. that they believe it to be
C. they believe that it is of
D. they believe that is
E. they believe to be of
1. 為什么不能是that
當(dāng)先行詞做定語從句的賓語，that 可以省略 one ( that ) they believe to be …….
2. 代詞:it 多余。
One that they believe it to be / One that they believe that it is ………
believe 后面已經(jīng)有邏輯賓語 one ,it 多余
3. 平行結(jié)構(gòu)：
A is B A/B 要平行對等，
此處 one(explosion ) is a type previously unknown to science. Explosion 不能是 a type. 可以是one of a type
4. 詞法believe X to be Y / believe that ……
觀點一to be比is在表示時間方面要好. 因為is是他們一直都這么認(rèn)為, 時間概念太明確, 然而, TO BE就有模糊性, 所以這個題目里頭OG說In the context of this sentence, the infinitive to be is more appropriate than the limited present-tense is in referring to an event that occurred long ago but has been discovered only recently.
觀點二
這題偶的理解比較單純，explosion, the one they believe to be of a type. 定語從句，
先行詞還原到定語從句結(jié)構(gòu)中就是： they believe the explosion to be of a type.....
根據(jù)believe 的兩種用法：
believe that ..... 和believe sth to be sth.....這里附和第二種用法。很自然的排除用限定性結(jié)構(gòu)，（包括沒有that, 直接用is 的結(jié)構(gòu)。）
不過語言有很大的約定俗成的部分，即某種結(jié)構(gòu)本身就帶有某種含義。的辦法是: 記住，形成習(xí)慣性思維，直到成為語感?？吹侥撤N結(jié)構(gòu)就覺得應(yīng)該是這個意思。
下列動詞接toV時總是用被動
allege, assume, claim, consider, deem, feel, find, know..., believe, ...
他們表示言談，想法或發(fā)現(xiàn)時，後面常接 to be 或 to have Vpp
that如果引導(dǎo)賓語從句, 一定不能省略.
that如果引導(dǎo)定語從句: 1. 如果that在從句里做主語, 不能省略; 2. that在從句里做賓語, 省略.
但上面的2在OG里有反例. 243就是that做后面的賓語而不省略的. 這并不是ETS自相矛盾, 而是補出that避免歧義. 所以, 沒有絕對的規(guī)律, 只有相對的正確, 因為語言的魅力在于靈活