Because the animals do not get the exercise needed to keep them in breeding condition. 翻译:因为缺乏锻炼,因此不具备生殖条件。不定式to keep them...结构是做定语还是状语?如果是状语,是目的还是结果呢?
...什么了?Which hotel would you suggest? 你看看住哪家旅馆?When do you plan to take your holiday? 你打算什么时候休假?Where is the best place to go surfing? 哪儿是冲浪的最好地方?Why did you absent yourself from class yesterday? 你昨天为什么没来上课?但如...
A. had done + since: since前面的句子可以采用过去完成时态had done:Since the party she had only spoken to him once.(那次派对之后,她只和他说过一次话。)B. was + since + had done:since后边的从句也可以用...
MALE STUDENT: Does... mm, do scientists actually know about sauropods, from looking-I mean, how much can we actually learn, looking at some ancient bones...compared to all we can learn from modern animals?MALE STUDENT: And comparisons between animals that lived millions of years apart-w-we...