V-ing并非都是表示選擇進行時態(tài),請看我下面的簡單分類
現(xiàn)在進行時 am/is/are doing He is playing now
過去進行時 was/were doing He was playing football yesterday
介詞之后 for/with/in/on + doing This book is for reading
固定詞組 spend...doing We spent four days making this.
動名詞 I would appreciate your calling back this afternoon.
V-ing 短語作主語 Listening to music is my favorite
V-ing 作伴隨狀語 He left alone,taking his luggages.謝謝那請問一下Lookat the prettylady .這個是進行時為什么不加這是個祈使句！