摘要
<正>1. because of因为,由于because of; because because of+n./v.-ing,不能接完整的句子。because+从句,不能与so连用。2. be scared of害怕音be scared of...=be afraid of...害怕be scared to do sth.=be afraid to do sth.害怕去做……3. prevent...from...阻止……prevent...from...=keep/stop.... from...."阻止……做……"。