usual (for sb/sth) (to do sth)； as usual照例；照旧；像往常一样； business as usual（尽管处境困难）一切照常，不受干扰 We had all the usual problem...
think over和think about的区别是意思不同、用法不同。think over意为仔细考虑，后接名词或代词作宾语。think about可接名词、动词ing形式或由疑问词引导的...
