"a long and happy marriage" "God bless this union"
"his second marriage was happier than the first" "a married couple without love"
"their marriage was conducted in the chapel"
"the marriage of music and dance" "a marriage of ideas"
误 Marriage are a very serious thing.
正 Marriage is a very serious thing.
析marriage一般情况下作不可数名词作主语时,其谓语动词使用单数形式。