句子類型
1．從結構上看，英語的句子可分為三種類型：簡單句、并列句和復合句。
2．簡單句：由一個主語（或并列主語）和一個謂語（或并列謂語）構成的句子叫做簡單句。簡單句有六種句型：
型號 句型 例 子
1 主語＋不及物動詞（＋狀語） The Frenchman coughed badly at night. / The city lies in a valley .
2 主語＋連系動詞＋表語 That is a map of China. / That piece of meat looks quite good. / It sounds like the singing of rails .
3 主語＋及物動詞＋賓語 You're doing the right thing. / Jack likes to stay at home and play by himself .
4 主語＋及物動詞＋間接賓語＋直接賓語 Can you tell me the way to the Summer Palace ? / It took me a week to finish the work.
5 主語＋及物動詞＋賓語＋賓語補足語 We call him Li Ming . / The rich man asked the singer to come up to the sitting room .
6 There +be+主語＋狀語 There are some flowers on the teacher's desk . / There are 365 days in a year .
3．并列句：由并列連詞把兩個以上的簡單句連在一起構成的句子。常用的并列連詞有and, but, for, or, nor, so, yet, neither…nor, either…or, still, however, not only…but also等。并列句的結構：簡單句＋并列詞＋簡單。
Hurry up, or you'll miss the early bus . / We love peace but we are not afraid of war . / He must be ill, for he is absent today .
She has not only knowledge, but also experience . / He was ill, so he didn't go to school. / Work hard, and you will succeed .
4．復合句：由一個主句和一個或一個以上的從句構成的句子叫做復合句。主句是句子的主體，從句只用作句子的一個成分，不能獨立。從句可以擔任復合句的主語（主語從句）、表語（表語從句）、賓語（賓語從句）、定語（定語從句）、狀語（狀語從句）。中學階段主要學習含有狀語從句、賓語從句、定語從句的復合句。
A．狀語從句：在復合句中修飾主句中的動詞、形容詞或副詞等的從句叫做狀語從句。狀語從句根據它表示的意思的不同可分為時間、地點、原因、結果、讓步、比較（或方式）和條件等類。
○1 時間狀語從句：由when, while, as, the moment, the minute, once, whenever, before, after, till(until), since, as soon as等連詞引導。