曹老师,您好!请您指教:
Chinese researchers hope to use the instruments onboard Chang’e-4 ___66___ (find) and study areas of the South Pole-Aitken basin. “This really excites scientists,” Carle Pieters,a scientist at Brown University, says, “because it ___67___ (mean) we have the chance to obtain information about how the moon ___68___ (construct).” (2020新课标)
请问为什么68 题是 is constructed呢?下面一题 61是 was 指过去的情况。那么请问: 客观事实和过去事实该如何区别呢?谢谢
What comes next is the endless无穷尽的 series of steps.接着是攀登不完的阶梯。 You can’t help wondering how hard it ____61____ (be) for the people then to put all those rocks into place. Though it is the only unnatural thing on your way up the mountain, still it highlights the whole adventure ____62____offers a place where you can sit down to rest your ____63____ (ache) legs.
68这个空是指月球的结构,这是系表结构表示月球现在的状态,而不是指100多亿以前月球当初形成的动作。所以这里要用一般现在时表示现在月球的构造、结构。又如牛津词典例句:The frame is constructed from lightweight aluminium. 这也是系表结构。61这个空表示当初(过去)人们堆砌这些巨石是多么不容易,是说明当时(过去)的情形,所以要用一般过去时。
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