互動封閉仿真課堂
1、智能交互 2、電子板書式視頻教學 3、在線互動問答 4、封閉課堂啟發(fā)式教學方式
隨堂測試、知識梳理、易錯點揭示、總結啟迪智能錯題本
聽課中的錯題能自動加入錯題本,課后可方便復習及導出錯題本升級服務
在線答疑、課后同類題練習、講義下載、短信提醒定語從句的引導詞分為關系代詞(who, whom, whose, which, that)和關系副詞(where, when, why)兩類,這些引導詞在引導定語從句的同時均在從句中充當成分。關系代詞可作主語、賓語和定語,作賓語時可省略;關系副詞可作狀語,一般不能省略。下面簡單介紹一下定語從句的難點。
一、介詞(短語) 關系代詞 / 副詞
1. 此處關系代詞只能是which / whom / whose / where / when,而不能用who / that.
如:They arrived at an old building, in front of which stood a tower. He climbed up to the top of the tree, from where he could see clearly what was happening in the woods.
2. 不定代詞 / 數(shù)詞 of which / whom.
如:Mrs. Green has three sons, none of whom works in the city. The boys discovered many pictures on the walls of the cave, most of which dated back to 15,000 years ago.比較:The boys discovered many pictures on the walls of the cave, most of them dating back to 15,000 years ago. (此處是獨立主格結構)