【正文】
正在那個時候 ) while 用于時 間較長時 強調兩個動作同時進行,并表示對比時 有時這三個連詞可以互換,有時不可以。 By the time I got to school, the class had already began. 我到校時,已經開始上課了。 They walked till /until it was dark. 他們一直走到天黑。主句一般用現(xiàn)在完成時,從句用一般過去時。 soon as 一 ?? 就 ?? We began to work as soon as we got there. 我們一到那就開始工作。 在。 一、時間狀語從句 要點 : 時間狀語從句,由以下連詞引導: when while as after before as soon as since till /until by the time 在時間狀語從句中,要注意時態(tài)一致。它可以修飾謂語、非謂語動詞、定語、狀語或整個句子。根據(jù)其作用可分為時間、地點、原因、條件、目的、結果、讓步、方式和比較等從句。一般情況下主句是將來時的時候,從句要用一般現(xiàn)在時。的同時;一邊 ?? 一 邊 ?? He smiled as he stood up. 他一邊站起來一邊笑著。 I will write to you as soon as I get home. 我一到家就給你寫信。 Mr GREen has taught in that school since he came to China three years ago. 自格林先生來中國以來,他就在這所學校教書。 Xiao Ming didn’ t leave home till / until his father came back. 小明直到他爸爸回來才離開家。 難點 —— as when while 的辨析 as when while 都表示主、從句動作同時發(fā)生,三者差異如下: 表示“一邊。 It was raining hard when (as) I got there. 我到那里時,正在下大雨。 ( 此時不能放在句首。 (此時 as ,when, while 可通用 ) 知識擴展 1. It is since 從。 It was an hour before(= until) the police arrived. 過了一個小時,警察才來。 (諺語 ) will be mixed school where not all the children are disabled. 他將是一所混合式學校,那里的兒童 并不都是殘疾。 there is smoke , there is fire. 無風不起浪。 He always studied so hard that he made GREat proGREss. 他總是那么努力,結果他取得了很大的進步。以至 It’ s such nice weather that all of us want to go to the park. 天氣是如此的好,我們大家都想去公園玩。 such 為形容詞 , 后只能接名詞。 七、比較狀語從句 要點:比 較狀語從句主要運用于形容詞和副詞的原級,比較級及最高級的句子之中。 比較級 more? than (更 ) This book is more instructive than that one. 這本書比那本書由教 育