It could be said that...
This expression is sometimes followed by a second clause offering a contrary view or scenario.
可以说
200
清华和北大
中国最好的大学有哪些？
200
你都有哪些课外活动？
打球、画画等等
300
：with a lot of difficulties
好不容易
300
is not A, but B
This structure is used when, in responding to a statement or situation, the speaker wishes to strongly negate A and affirm B.
不是A, 而是B
300
中国：三年
美国：四年
中国高中有几年？
美国高中有几年？
300
硕士（杨老师和熊老师） 博士
读完大学你可以继续读什么？
400
：arranged [a time schedule] fully
把时间安排得满满的
400
[adverb] only; used before numbers to express a small quantity
才
400
语文、数学、英文、文科综合(Liberal Arts); 理科综合(STEM)
中国的高考考什么？
400
你想要去中国留学吗？想或不想？为什么？
（自己的理由）
500
：to hope that one's son will become a dragon; to hope that one's son will become successful
& ：to hope that one's daughter will become a phoenix; to hope that one's daughter will become successful
望子成龙
望女成凤
500
：some knowledge is not learned in school or from books, but is learned from society, from life