back 有一个意思是“if the wind backs,it changes direction,moving around the compass in the direction North-West-South-East”。各位能用这个意思造一条地道句子吗？
热心网友
因为这是违反常理的假设,所以要用 "If it were",例如你想说假如我是一只小鳥,就要写 "If I were a bird".If the wind were change it's direction,blow back from North-West to South-East.