Less clear, however, is whether or not
assortative mating is on the rise. Answering this question is hard, because the ratio of
educated men to educated women has
shifted over time. That university-educated men are now more likely to marry university-educated women may not show a change
in -. It may simply
reflect the increased number of women
with degrees.
單詞注解
ratio:
a relationship between two amounts, represented by a pair of numbers showing how much bigger one amount is than the other 〔兩個數(shù)量之間的〕比，比例，比率
the ratio of sth to sth 以……的比例
Men outnumber women here in the ratio of three to one
此地男子數(shù)量以三分之一超過女子
The ratio of nursing staff to doctors is 2:1.
護理人員與醫(yī)生的比例為2比1.
翻譯：
然而，是否門當戶對這個趨勢處于上升還不清楚。因為受教育男女比例一直在改變，所以回答這個問題是困難的。受過教育的男子可能會和受過教育的女子結(jié)婚，但在配偶偏好方面可能不會改變。這可能反應(yīng)了有學(xué)歷的女子的數(shù)量在上升。
語法：
1.Less clear, however, is whether or not assortative mating is on the rise.
這是個部分倒裝句，however是個插入語。正常語序是Whether or not assortative mating is on the rise is less clear.
部分倒裝的形式：(1)助動詞，情態(tài)動詞或be 動詞放到了主語的前面。
(2)以否定詞開頭的句子要求部分倒裝
Not until yesterday did little John change his mind.小約翰直到昨天才改變了主意。
(3)以否定副詞開頭并加狀語放在句首的句子要求部分倒裝。這些否定副詞有barely, hardly, little, seldom, scarcely…… when, never, no sooner…… than, rarely, no more, not nearly, not only和only
Only in the country can you learn the “true English”.
你只有在這個國家里才能學(xué)習(xí)真正的英語
完全倒裝:表+系+主.
2.That university-educated men are now more likely to marry university-educated women may not show a change in spousal preferences. It
may simply reflect the increased number of women with degrees.
在這個句子當中that引導(dǎo)的是主語從句.
That 的用法
a.它用來指已被提到的人或物；也可表對比,指兩個中較遠的那個.相當于形容詞的用法，后加名詞
What about that book you borrowed from me last month?
b.that 可引導(dǎo)定語從句(關(guān)系代詞)，指代主句或主句中的某個名詞，當在從句中充當賓語時可以省略。也可作關(guān)系連詞，只有在定語從句中才是關(guān)系代詞。
C.that可以引導(dǎo)主語從句，放于句首。適用于it作形式主語的句型，
That obama is the president of the USA is all known to us=It is all known to us that obama is the president of the USA.
眾所周知，奧巴馬是美國總統(tǒng)。
用于表示愿望或期盼，常用虛擬語氣
That I could fly in the sky. 我要能在天上飛就好了。