四六级写作常用关系词：因果关系

because;

because of this;being that;

another important factor/reason of... ;

since; as;

for;

in that...;

owing to;

due to;

for the reason that...;

in view of;

the reason seems to be obvious;

there are about... ;

for this reason;

as a result of this;

therefore;

...and so...;

consequently;

as a result;

thus;

hence;

so;

so that...;

in consequence;

as a consequence;

accordingly;

inevitably;

under these conditions

thereupon.