题目选项分析

比较两个句子语法结构语义，选出最佳答案：

The personal income tax did not become permanent in the United States until the First World War; before that time the federal government had depended on tariffs as its main source of revenue

The personal income tax did not become permanent in the United States until the First World War; before that time for their main source of revenue, tariffs were depended on by the federal government

写下分析过程，便于复习“吃透”这个句子：

答对用户笔记

0人: lydia1054 2020-12-28 10:21:13

主動優於被動

0人: 大番茄红晃晃 2019-04-19 11:18:51

tariffs were depended on by the federal government FOR their main source of revenue??? Make no sense at this form.

0人: zigzagyan 2018-06-02 18:24:50

1. 代词前指（一般都前指）：their不知道指谁
2. 代词后指（只出现在状语从句中）：in his school， Tom is popular。his 指后面半句中的主语。而这里后半句主语是tariffs，不通。

题目基本信息

所属科目：语法SC
题目来源1：OG18-语文分册-206
题目来源2：OG19-语文分册-206
题目来源3：OG20-语文分册-215

难度：易