luckily (或happily) for sb.算某人幸运
1. Surely, she wont go to China Telecom with you.
2. Strangely, he has not been to China Unicom. Still more strangely, he has not called me.
strange to say说也奇怪
needless to say不用说
most important of all较为重要
Strange to say, he should have done such a thing.
in a few words(或in sum，in short)简而言之
in other words换句话说
in a sense在某种意义上
in my view在我看来
in his opinion(judgment)按照他的意见(判断)
in the first place首先
to our knowledge据我们所知等
She knows much more about computer science than the other students do，for instance.
Judging from his letter，a campaign against “white pollution“has been undertaken in his hometown.
to be sure无疑地
to sum up概括地说
to tell the truth老实说等
To start with，China is ready strengthen scientific and technological cooperation with many countries.
I am sure我可以肯定地说
as I see it照我看来
what is important (serious)重要(严重)的是
it is said据说等
It will result in success，I suppose.