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　　一般预料…It is expected （that）子句

　　据估计…It is estimated （that）子句

　　一般相信…It is believed （that）子句

　　例句：It\'s known that Hangzhou is a beautiful city.

　　众所周知杭州是座美丽的城市。

　　22.Adj + as + Subject（主词）+ be, S + V... （虽然……）

　　例句：Rich as our country is, the qualities of our living are by no means satisfactory.

　　{by no means = in no way = on no account 一点也不}

　　虽然我们的国家富有，我们的生活品质绝对令人不满意。

　　23.For the past + 时间，S + 现在完成式…（过去……年来，……一直……）

　　例句：For the past two years, I have been busy preparing for the examination.

　　过去两年来，我一直忙着准备考试。

　　24.It pays to + V ... （……是值得的。）

　　例句：It pays to help others.

　　帮助别人是值得的。

　　25.be based on （以……为基础）

　　例句：The progress of the society is based on harmony.

　　社会的进步是以和谐为基础的。