一般现在时的用法1) 经常性或习惯性的动作，常与表示频腮度的时间状语连用。 时间状语： every…, sometimes, at…, on sunday i leave home for school at 7 every morning 2) 客观真理，客观...
万能句子：1 yet little has been done to solve this problem worldwide 2 to make one final point, …3 as we are all aware …4 …...
短语动词是一个整体，不可丢掉后面的介词或副词。 this is a photo of the power station that has been set up in my hometown my sister will be taken care of by grandma ...
