作业帮it is n.to do sth.
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it is n.to do sth.
it is n.to do sth.
it is n.to do sth.
it is time to do sth是做什么的时间了
n 是名词
it is n to do sth是做什么的.（名词的意思).了
n. 是 noun 也就是名词。
sth. 是 某事。
另外 sb. 是某人。
就是说 It is + 名词 to do + 某事。
it is n.to do sth.
It is + adj to do sth ---It is + adj to do sth --- （意思）n.短语
It is fun to do sth造句
It is fun to do sth.造句.
It is times to do sth造句
it is enough to do sth
it is+adj+to do sth.意思
It is a pleasure to do sth.
It is worthy to do sth.
it is time to do sth过去式
It is+adj+to do sth
It is possible for sb(sth) to do sth
it is adj.of sb.to do sth.it is adj.from sb.to do sth.
是it is time to do sth还是 it is the time to do sth
it is a great fun to do sth.还是it is great fun to do sth
It is bad for sb to do sth.It is bad for sb to do sth.
it is my frist time to do sth / or doing sth/or do sth?
it is adj.to do sth.it is adj.doing sth.有什么区别it is adj.to do sth.it is adj.doing sth.有什么区别?