【正文】 he factory keeps releasing smoke,making the air dirty. =The factory keeps releasing smoke. As a result,the air is made dirty. ing作條件狀語置于句首或句末。 [考例 2] We often provide our children with toys, footballs or basketballs, _____ that all children like these things. (2020全國卷 III) A. thinking B. think C. to think D. thought [考點 ] Ving形式作原因狀語。 1. 作時間狀語 __________________________, I decided to write 到他的信后，我決定給他回信。Grammar and usage There are many sleeping students in class. （表語） （定語） Feeling the lesson is boring, the students are sleepy. The students feel the lesson boring. The lesson is boring. （賓補） （狀語） 3. The man who is running in the picture is Liu Xiang. 2. The man running in the picture is Liu Xiang. 1. a running man 一 、 Ving used as attribute: 小 結(jié) : Ving形式作定語可表示動作正在進行或與所修飾名詞有邏輯上的主謂關(guān)系 . 單個 Ving詞作定語修飾名詞一般置于名詞之前（如例 1）； Ving詞組修飾名詞則置于名詞之后（如例 2），此時相當(dāng)于一個定語從句（如例 3） . 在禮堂里做演講的教授 在田間勞作的農(nóng)民 持續(xù)半個小時的會議 朝街的大樓 the professor giving a speech in the hall the farmers working in the field the meeting lasting half an hour the building facing the street Translate the phrases using ving： The teacher teaching us English is Mr. Sun Rewrite the following sentences with attributive clauses. =The teacher who teaches/ is teaching us English is Mr. Sun. The people sitting behind us are all teachers. =The people who are sitting behind us are all teachers. 注意 : 現(xiàn)在分詞與動名詞作定語時的區(qū)別： 動名詞表示其修飾名詞的性質(zhì)或用途，與它修飾的詞無邏輯上的主謂關(guān)系。 =_____________________________,I decided to write back. Having received his letter After I had received his letter 因為他已經(jīng)去過長城許多次，上周他就沒去。 [考例 3] While watching television, _____. （ 2020全國卷 II） A． the doorbe