表条件

   if;

   unless;

   lest;

   provided that;

   if it is the case;

   in this sense;

   once...;

   if possible;

   if necessary;

   if so;

   if not all;

   if anything.

表归纳总结

in other words;

on the whole;

in sum;

therefore;

hence;

in short;

in brief;

to sum up;

in conclusion;

in summary;

to conclude;

the conclusion can be drawn that...;

for this reason;

in short.