Question

英语从句解答 为什么这道题选B，横线后的定语从句缺成分吗？ 解析上说如果选B C的话少一个先行词，

这是为什么？
Loulan city is not at all _______a traveler who has never seen the desert before can expect.
A. what B. that C .which D. where

Answer 1

a traveller who has never seen the desert before是一个整体，who has never seen the desert before修饰a traveller于是句子简化成：lou lan city isn't at all [what] a traveller can expect what作expect的宾语。为便于理解，可以把at all 放到句尾。not ... at all,译为：楼兰城不是一个（之前没有见过沙漠的）旅行家所能想象的。如果选B，C的话缺少先行词a city，应为Loulan city is not at all 【a city】 which/that a traveler who has never seen the desert before can expect.。你可以这样分析句子，选B,C的话是按定语从句理解的，而定语从句中的定语去掉后是不影响句子结构的。本句中去掉 a traveler 【who has never seen the desert before】 can expect的定语修饰后，为lou lan city isn't at all ----该句子是主系表结构明显的不够完整，缺少表语a city，后面的a traveler 【who has never seen the desert before】 can expect修饰该表语，这样才能选B，C，就比较正确了。谢谢提问！

Answer 2

这题应该选A
你把这个句子精简一下就明白了，Loulan city is not what a traveler can expect. 这是主要架构，其他成分可以拿掉。如果你要填that 或 which 那么需要加上一个先行词，改成Loulan city is not the city which（或that ）a traveler can expect.
既然此处没有先行词，那只能用what，构成一个表语从句，希望能帮到你哦~请采纳O(∩_∩)O

Answer 3

选A吧~~~相当于something that 用that 和 which就是定语从句，需要一个先行词，前面说的something就是一个先行词