In his letter was his promise （） he would spend the Christma

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/11/08 14:44:43

In his letter was his promise （） he would spend the Christmas Eve with me
A、that
B、what
C、which
D、whether
为什么用A?为什么其他的不能用?解释一下、并且说明一下是什么从句

这是同位语从句
同位语从句属于名词性从句,大多由从属连词that引导,常常跟在fact,idea,opinion,promise,news,hope,belief等名词后面.同位语从句一般用来解释或说明这些名词的具体含义或内容,在逻辑上表现为同位关系.
what一般是用于从句中缺少成分时,用于充当宾语.which一般情况下可与that替换,但在同位语从句中不可以；另外,在做地点状语时 ,in which 这样的结构等于 where .whether一般都是与or not连用的.

In his letter was his promise （） he would spend the Christma in his letter was his promise that he would spend the Christ 4.Along with the letter was his promise ____ he would visit Along with the letter was his promise that he would visit me ( )18.Along with the letter was his promise _____ he would v in his letter was his promise 的主语呢? along with the letter was his promise about which we were al The only response he would get in return was walls in his fa the result what he said would lead to was his regret in the Li Leidid badly in the test.He was afraid his father would p before lunch the letter in his office quickly he read He spend the whole day in his room .Hewas in his room ____da