what引导的成分叫主语从句,他所指代的内容是350年前美国森林所发生的事情,整个句子充当主语,但是后面什么也没有,所以这句话要使完整的话可以这样改动:what happened to the forests of the usa in the last 350 years made us aware of the importance of plants(350年前美国的森林所发生的事使我们意识到了...
What has happened to the forests of the USA in the last 350 years? In 1620, about half the USA was covered by forest. In 1850, about a third was covered by forests. Today the forests have almost gone. But too many trees are still being cut down in the USA. There are a lot of ...
A. has happened to B. is happened to C. has happened at D. is happening 相关知识点: 试题来源: 解析 A 考查现在完成时的用法。句意:在过去的350年里,美国的森林发生了什么?过去发生并且已经完成的动作对现在造成影响或后果,过去某一时间开始并一直持续到现在的动作或状态。发生什么事了用介词to ...
It shows what has happened to the forests of the USA in the last 350years.这副图展示出过去三百五十年来美国的森林所发生的情况what是做什么的啊?我听说发生的事应该在happened前的啊,怎么跑后面去了?in the last是做什么的?整句改成It shows the forests of the USA happed 350 years...
【题目】What has happened to the forests of theU.S.A. in the last 350 years? In 1620. abouthalf the U.S.A. was covered by forests. In 1850, about a third was covered by forests. T oday the forests have almost gone. But too many trees are still being cut down. T here is ...
Chas happened at Dis happening 相关知识点: 试题来源: 解析 1、“对于某人或某物发生了什么”。2、happen无被动语态形式。3、that后面用从句。4、现在进行时。 happen to…意为“发生”,为固定搭配。短语in the last…years“在近……年里”,常与现在完成时连用。结合选项看,只有has happened to正确。 “...
The Great Green Wall will stop the wind from blowing the earth away. It will stop the sand from moving towards the rich farmland in the south. It has already helped a lot. But more “Great Green Wall” are still needed, and not only in China. They must be built all over the world...
what happened in the street这句话正确吗what has hpaaened at the forest of the usa in the last 350years?还是what has hpaaened to the forest of the usa in the last 350years?为什么what has hpaaened at the forest of the usa in the last 350years理解为在美国的森林发生了什么事不对吗...
What happened to the USA, where did it go?Lisa Gawlas
百度试题 结果1 题目What the forest of the USA in th e last 350 years? A. has happened to B. is happened to C. has happened at D. is happening 相关知识点: 试题来源: 解析 computer programming 反馈 收藏