1）Such defects as mentioned above can be prevented by the other way of
2） Except for s sake only.
3） Perhaps A is the wrong word，however，B might be better.
4） Firstlast but not least
5） Shall we do this？ Not necessary the case.
6） ，and vice versa indeed .
7） On the contrary，in spite of these increase
8） Compared with A，B has many advantages such as
9） Not so much as he had talked about.
10） ，the truth of the matter，however，is that
11） For some，the way maybe right，nevertheless，for many others
12） As everything going to the extreme has its negative aspects，so has
13） It is fairly well know thathowever，it is less know that
14） ，but this was not always the case.
15） At first，different in their opinions，on second thoughts，however，all of them agree to
16） None the less（尽管如此）
17） When people succeed，it is because of hard work，however，luck has a lot to do with it too.
18） ，sometimes it isnt totally the case，however.
19） Do some A else but B.