问几道英语题1.It is the first time that I have been to Beijing.句子中

来源：学生作业帮编辑：搜搜考试网作业帮分类：英语作业时间：2024/08/06 03:46:23

问几道英语题
1.It is the first time that I have been to Beijing.
句子中为什么要用have been to ,这是现在完成时哦,为什么不用一般现在时?
2.It is time that you went home .
句子中为什么要用went ,又是同样的疑问,为什么不用一般现在时?
3.upset 是形容词,表示心烦意乱的意思,既然是形容词,为什么它不能置于名词之前?（形容词可以用来修饰名词的啊!）
请高手们解释!

1.可以认为这是一个固定结构.第几次做某事.It is the ...time that...have done sth.也可以理解为这是已经完成的事情.
2.固定结构.It is time +过去式.
3.固定用法.像这样的形容词还有很多啊.比如a sick man (不是an ill man )
具体用法参见：
1.当形容词修饰由 any-,every-,no-,some- 和 -body,-one,-thing 等构成的复合不定代词时,形容词需要后置.
2.当形容词修饰起名词作用的 anywhere ,somewhere 时,通常后置.
3.以 -able 或 -ible 结尾的形容词一般充当后置定语,表示暂时的特征或现象,而且中心名词前大多有形容词最高级或 all,only,every 等.
4.以字母 a- 开头的表语形容词,如 asleep,awake,afraid,afloat,alive 等作定语时,通常后置.
5.else 修饰疑问代词时,须后置.
6.当形容词前有 so,more,most 等词修饰时,常后置.
7.形容词短语通常后置,其功能相当于一个定语从句.
8.两个或两个以上的形容词用 and 或 or 连接作定语,表示强调意义时要后置.
9.形容词比较结构须后置定语.
10.有些形容词作前置定语时和后置定语时所表达的意义不同.

It is the second time that I have been to Beijing是主语从句吗? it is the first time that i have been to japan 是什么从句 This is the first time that i have come beijing. It is the first time I have ever been to China.It is the fir it's the first time that i -----to beijing It is my first time that I have been to Shanghai This is the first time that I have been abroad It is the first time that I am here/ have been here This is the first time (that) I have been to the summer pala this is the first time that i to Mountain Tai填have been还是cam It is the first time that I have met him.中that后的句子作什么成分? it is the first time that i have been here 是定语从句么?that做谁的宾语?