Question

请问It was not until the 1990s,when Mr.Wang was already in his forties,_

It was not until the 1990s,when Mr.Wang was already in his forties,___he began to teach himself English.
A before B when C since D that

Answer 1

选择：D that
解析
一、句子总体分析

主句 It was not until the 1990s ___ he began to teach himself English
插入性时间状语从句：when Mr. Wang was already in his forties

二、所表达意思与句子结构分析

1、主句的意思是“直到上世纪九十年代他才开始自学英语”。
2、各种不同的表述手段——
* 正常语序：He didn’t begin to teach himself English until the 1990s.
* 倒装句：Not until the 1990s did he begin to teach himself English.
* 强调句：It was not until the 1990s that he began to teach himself English.
——其结构为： it（强调代词）+ be + 强调部分 + 助动词 + 主语 + 谓语动词 +其他部分
* 其他手段：It was in the 1990s when/before he began to teach himself English.
——其结构为：
主句：It was in the 1990s ——it 在这里是非人称代词，用来指代时间
从句：when/before he began to teach himself English.

结论：选择 A befor e和 B when 与原题结构有出入；C since 不能表示这种意思。

Answer 2

armouomo 正解

追问

？？？？什么意思？

追答

…………我是说一楼的那个人armouomo的答案正确
另外，你上面追问“不是说that前无逗号的吗”
先看看句子
It was not until the 1990s,when Mr.Wang was already in his forties, that he began to teach himself English.
中间有句when Mr.Wang was already in his forties，你可以当这句是插入语，逗号是这个句子的逗号，去掉这个句子就变成
It was not until the 1990s that he began to teach himself English.
这就没有逗号了，是吧

追问

O(∩_∩)O谢谢分析

追答

^_^

Answer 3

D
It was not until .....that......句型。

追问

不是说that前无逗号的吗

追答

那答案是什么呢？？

也许就考你这个逗号的干扰。

追问

干嘛不耐烦

追答

呵呵，没有哦。。。是想知道答案是什么来分析而已哦。。

Answer 4

D
it is....that.....强调句句型。

Answer 5

正确答案是D，，，强调句It is/was+被强调部分+that+句子其他成分。

when Mr.Wang was already in his forties是干扰项，可以不管

追问

不是说that前无逗号的吗

Answer 6

D，It was+强调的时间（not until the 1990s)，（时间状语），+that从句

追问

不是说that前无逗号的吗

追答

加入插入语带入的逗号嘛，同ilcartoon