老师好!请教新目标八上教材中的一句话:But I think friends are like books—you don't need a lot of them
as long as they're good.请问老师,这里a lot of them 不能是“许多它们”吧?那这里是表示部分和整体关系, 类似one of...之类的吗?
Massive open online courses (MOOCs) have veered away from lectures on Plato[柏拉图] or black holes[黑洞] in favour of courses that make their students more employable.
请问from lectures on Plato[柏拉图] or black holes[黑洞] 在句中做什么成分