为什么这句话要用playing,而不用played句子是 I saw LiMing playing near the river on my way home .

为什么这句话要用playing,而不用played句子是 I saw LiMing playing near the river on my way home . Look!There are a lot of children playing in the ground.为什么要用playing而不用are playing 动名词和不定动词!Playing computer games too much is bad for your eyes.这句话为什么要用Playing而不用To play动名词和不定动词的区别是什么?什么时候该用哪个? Look!Lily with her sister is flying a kite on the playground这句话中 为什么用 is playing 而不用 are flying 为什么用by playing 而不用through playing句意为：通过打羽毛球.为什么开头用by playing badminton,却不用 through playing badminton? is the girl are playing the piano?这句话为什么要用are playing谢谢! Where are you playing football为什么用are?为什么用be动词而不用助动词？ Ted with his friends is playing volleyball.为什么用is 而不用are? the cat is playing with ( ) own tail 为什么用its而不用itself iPhone为什么i不用大写而P要大写 The missing boys were last seen playing near the river这里为什么用missing 和playing The missing boys were last seen playing near the river这里为什么用missing 和playing 而不用misse和play? we still have some time left.这句话中的left是什么意思?为什么不用leave?而要用过去式? how are lucy and tony.这句话为什么要用are而不用 is?如题,麻烦讲解一下语法. (when i arrived,i found the door closed.)这句话为什么要用closed而不用closing. my sister does not have tobuy any vegetable today 这句话中的does为什么要用does而不用do I like plating football but I don't lke to play it now.为什么在后面要用to play而不用playing? Have you seen the TV play?这句话中为什么用see而不用watch? take exercise often,child这句话为什么用take 而不用 taking或者to take