1、不用说，…

　　It goes without saying that 子句

　　（It is）needless to say （that）子句

　　It is obvious that子句

　　Obviously，S. + V.

　　例︰不用说，早睡早起是值得的。

　　It goes without saying that it pays to keep early hours.

　　2、是不可能的；无法…

　　There is no Ving

　　There is no way of Ving.

　　There is no possibility of Ving.

　　It is impossible to V.

　　It is out of the question to V.

　　No one can V.

　　We cannot V.

　　例︰不可否认的，成功的事业关键在于健康的身心。

　　There is not denying that successful business lies in a healthy body and mind.

　　3、我深信…

　　I am greatly convinced （that）子句

　　I am greatly assured （that）子句

　　例︰我深信预防是于治疗。

　　I am greatly convinced that prevention is better than cure.