therefore: stresses the logically deduced conclusion that it introduces: it was raining hard and ~ we stayed inside.    deduce推断演绎推理to use logic or reason to form a conclusion or opinion about something，如Alison had cleverly deduced that I was the author艾莉森已经聪明地推断出我是作者，如a word's meaning can often be deduced from its context一个词的意思常常可以根据上下文推断出来，在逻辑中deduce表示演绎，即归纳induce的反过程，在推断infer-judge组    逻辑指有条理的思考implies a capacity for orderly thinking，如logical mind/thinking逻辑思维


hence: though often interchangeable with therefore, is more likely to stress the importance of what precedes: a meal badly overcooked and ~ inedible.  不可食用     what precedes之前的，这里指逻辑中的原因或前提


consequently: tends to suggest good and reasonable grounds or a strong logical possibility: he said he would come; ~ we will wait for him.


then: when used to indicate logical sequence, is employed chiefly in the consequent clause or conclusion in a conditional sentence: if A and B are mutually exclusive possibilities and A is true, ~ B is false.      conditional sentence条件(复合)句


accordingly: usually indicates logical or causal sequence but connotes naturalness or usualness in the consequence rather than necessity or inevitability: knew where the edges of the driveway were and plowed the snow ~.   铲雪，plow本义犁地翻土


therefore所以: 强调符合逻辑的结果，hence因此: 更强调原因，consequently所以: 有充分的根据和可能性，then那么: 引导条件句中的结果从句，accordingly相应的: 表示自然通常（而非必然）的逻辑因果关系


记忆方法: 1) 首字母记忆THAT Conclusion那个结果<==因此
         
         2) 因此的意思是作为结果mean as a result or concomitant.首字母记忆THAT Conclusion那个结果<==因此  concomitant相伴的伴随的作为结果的=happening at the same time，如a concomitant increase随之增长，a concomitant of a free press新闻自由的结果(产物)