The period when the great painted caves at Lascaux and Altamira were occupied by Upper Paleolithic people has been established by carbon-14 dating, but what is much more difficult to determine are the reason for their decoration,the use to which primitive people put the caves, and the meaning of the magnificently depicted animals.
The work of mathematician Roger Penrose in the early 1970s, on the geometry of what are called aperiodic tiles, turned out to describe the architecture of a previously unknown class of crystals. (A) what are called aperiodic tiles, turned out to describe (B) what is called aperiodic tiles, describes (C) aperiodic tiles, describing (D) so-called aperiodic tiles, describe (E) aperiodic tiles, it turned out to describe
WHAT从句做主语,句子中的谓语动词同主句谓语动词要保持一致,或主谓一致,指同主句谓语动词后的内容一致,What all students have to do are ....
不同意. 从句中的谓语在数上应该与从句中的主语一致.
What all students have to do are ...不对, 我觉得应该是 ... to do is, 参考你的第一个观点.
哈, 又多了一个问题! 欢迎继续讨论.
OG211似乎证明了我的观点 The period when the great painted caves at Lascaux and Altamira were occupied by Upper Paleolithic people has been established by carbon-14 dating, but what is much more difficult to determine are the reason for their decoration, the use to which primitive people put the caves, and the meaning of the magnificently depicted animals. (A) has been established by carbon-14 dating, but what is much more difficult to determine are (B) has been established by carbon-14 dating, but what is much more difficult to determine is (C) have been established by carbon-14 dating, but what is much more difficult to determine is (D) have been established by carbon-14 dating, but what is much more difficult to determine are (E) are established by carbon-14 dating, but that which is much more difficult to determine is
我认为,在这里are是和后面的article有关的。bravemba大侠的那段话的连接,我一下子找不到了,但是他说的是针对all one has to do ...is to....,to,.,., and to....并不是说这个的。 我个人认为主语从句做主语谓语动词用单数。但是在这里和单纯的主语从句做主语不同的是 sth are called articles。那么我认为应该用复数。ets真的是很搞。