positive: 前者是害怕,后者是担心,afraid of,worry about
negative: often usually always的区别是:always是频度最大的词,often在频度上不如usually那么频繁,usually频度仅次于always。<br>区别<br>(1)always 的频度为100%,表示动作重复、状态继续,中间没有间断,意思是“总是”、“永远地”.<br>例如:The sun always rises in the east and sets in west.太阳总是东升西落.<br>(2)usually 的频度为70%左右,意为“通常”、“平常”,即很少有例外.<br>例如:He usually goes to bed at ten o’clock.他通常10点钟睡觉.<br>(3)often 的频度为50%左右,意为“常常”,但不如usually那么频繁,表示动作重复,中间有间断.<br>例如:He is often later for school.他上学经常迟到.<br>very often 语气比often 重,常位于句首或句末.<br>用法<br>1.Always常用于行为动词前、be动词后,强调动作的连续性。常用于一般现在时,也可用于进行时态当中(往往含有赞扬或批评等感情色彩)。<br>We always go for a picnic on weekends.<br>我们周末总去野餐。<br>He is always borrowing money.<br>他总是借钱。<br>2.Usually意为“通常”,常常修饰一种习惯性的行为。<br>I usually drink a cup of water in the morning.<br>我通常早上喝一杯水。<br>3.Often意为“常常”,表示动作有间断,常用于行为动词前、be动词后,有时加强语气可放于句首或句末。<br>He often goes to the cinema.<br>他经常去那家电影院。<br>I don’t play basketball very often.<br>我不常打篮球。