例284　According to several studies concluding that parents are less happy than childless couples, single parents are the least happy of all.

【结构分析】句子开头是个介词短语According to several studies...，后面是分词定语concluding that...，后面是宾语从句parents are less happy than childless couples，这个句子的主干是single parents are the least happy of all。

【亮点回放】此句话的亮点在于介词短语套上分词定语，再套上宾语从句，很经典。

【核心词汇】

according to several studies　根据很多研究

less happy　不太高兴

childless couples　不生孩子的父母

single parents　单身父母

the least happy　最不高兴

【参考译文】多项研究表明，有孩子的父母很少比没有孩子的夫妇更快乐，而单亲家庭是最不快乐的。