love and attention 可以当作单数或复数,要看语境（和说者要表达的意思）,
比如
It's often said that love and attention are all that's needed to make a woman happy.
就你提供的例句,说者无疑是把 ”love and attention" 视为一个统一的概念,因此用单数 this ,但如果这句子由我来写,我会选择用复数 these .
我是加拿大人,英语是我第一语言.
love and attention 可以当作单数或复数,要看语境（和说者要表达的意思）,
比如
It's often said that love and attention are all that's needed to make a woman happy.
就你提供的例句,说者无疑是把 ”love and attention" 视为一个统一的概念,因此用单数 this ,但如果这句子由我来写,我会选择用复数 these .
我是加拿大人,英语是我第一语言.