其实这是非谓语的一种形式,建议先看下这篇:
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句子都是合并而来的。
比如
I am a student from China
可以展开为:
A=B=C
I = a student = from China
所以:
A=B: I am a student
A=C: I am from China
B=C: a student is from China
没有任何问题吧。
is在英语里,就是等号的意思。
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It is very easy for me to learn English
其中的for me可以先拿走。状语一般先拿走。
A=B=C
It = easy = to learn English
展开:
It = easy
It = to learn English
easy = to learn English
To learn English is very easy。这也是行的通的。
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A lot of animals only wake up at night,
so this is the best time to watch them.
分析下 this is the best time to watch them
A=B=C
this = the best time = to watch them
展开:
this = the best time
this = to watch them
the best time = to watch them
To watch themh is the best time。这也是行的通的。
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It takes me a lot of time to learn English.
由于是take实义动词,不是be
所以是 A take B +C
展开就是:
A take B
A = C
C take B ===> To learn English takes me a lot of time
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搞明白了,这种句子就很简单了。