问题标题：
sbthinkitadjforsbtodosth与sbthinkit'sadjforsbtodosth有何区别Somepeoplethinkithardtosolvethatproblom是不是也可以说成Somepeoplethinkit'shardtosolvethatproblom只不过it在句中作的成分不同而已,Som
问题描述：
sbthinkitadjforsbtodosth与sbthinkit'sadjforsbtodosth有何区别
Somepeoplethinkithardtosolvethatproblom是不是也可以说成Somepeoplethinkit'shardtosolvethatproblom只不过it在句中作的成分不同而已,
Somepeoplethink__________hardtosolvethatproblom.空格这填itits
高雨青回答：
确实成分不同.thinkithardtosolvethatproblem中it是think的宾语（形式宾语,代替后面的tosolvethatproblem）,hard是宾语补足语.在thinkit'shard中,think后面是个结构完整的宾语从句,it是此从句的形式主语,hard是此从句的表语,it代替后面的tosolvetheproblem.祝好!
补充：
我又确认了一下应该是都可以的下面是thinkitadjtodo的例句
thinkitnecessary/possible/bestetc
(=believeitisnecessary,possibleetc)
Ithoughtitbesttocallfirst.
Ithoughtitappropriatetoinvitehertospeakatthemeeting.
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