Question

我做了几道英文练习，列出了我的答案和参考答案，请问为什么我的答案错了，参考答案为什么是对的？

我做了几道英文练习，总结了以下关于时态的错误，列出了我的答案和参考答案，请问为什么我的答案错了，参考答案为什么是对的？

Test 1: People’s reading habits are changing because they __ (read) more on the Internet and fewer books.
mine: are reading
key: read

Test 2: In this region, most people __ (speak) the local language a hundred years ago.
mine: had spoken
key: spoke

Test 3: The number of students in higher education __ (rise)until 2003 and then fell the following year.
mine: had risen
key: rose

Test 4: Since I started using email, I __ (write) a traditional letter.
mine: had not written
key: have not written

Test 5: I __ (forget)the word which means “in the middle of the night.”
mine: forget
key: have forgotten

Test 6: The library __ (become) much more comfortable since they installed air conditioning.
mine: had become
key: has become

Test 7: It is device to help people find keys which they __ (lose)
mine: lose them
key: has lost

Answer 1

感觉楼主在时态方面还是比较薄弱啊，建议先去复习一下各种时态的定义和用法，不要直接做题。以及最重要的一点，分析句子语境语境！
Test 1: 没有理解一般现在时和现在进行时的区别。一般现在时表示经常 / 习惯性的动作或状态，现在进行时表示说话时（瞬间）正在进行的动作。 这一句是陈述一个事实：“他们平时多在网上阅读” 而不是 “他们正在网上阅读”
Test 2 & 3： 表示时间的时间点没有get到，以及没有理解一般过去时和过去完成时的区别。（楼主自己去做功课吧)。#2 里面的 a hundred years ago，很明显的一个一般过去时的时间点。#3 根据后面的fell 也可以类比出来。
Test 4: 没有理解现在完成时和过去完成时的区别。根据语境，该动作是从过去延续到现在的（从那之后再没写过），而不是单纯的过去的一段时间内。
Test 5：Forget这个词除非用在祈使句里，一般不用原型。因为“忘了"这个动作发生在过去
Test 6: 同 Test 4 above.
Test 7: 定语从句固定搭配。