初三英語易考難點語法知識的運用

初三英語難點如果不好好復習的話，很容易影響到后期的考試。其實想要學好英語也不難，主要提高成績的方法就是認真復習。通過以下的一些語法復習，相信大家在學習英語知識的時候一定會有所提升，今天就帶大家一起學習初三年級的部分語法知識。

語法時態(tài)

語法：直接引語變間接引語。

直接引用別人的話叫直接引語，用來轉述別人的話叫間接引語。例：

He said, "He will go to Beijing tomorrow." (直接引語)

He said that he would go to Beijing the next day.

直接引語變間接引語時時態(tài)、人稱及一些時間或個別詞都要做相應的改變。

①時態(tài)：

一般現(xiàn)在時→一般過去時 一般將來時→過去將來時

現(xiàn)在進行時→過去進行時 一般過去時→過去完成時

現(xiàn)在完成時→過去完成時

* 但真理性的句子時態(tài)不變。例：

He said: "The sun rises in the east."

He said that the sun rises in the east.

他說太陽從東方升起。

②時間：

now→then, last month→the month before.

today→ that day, three days ago→three days before.

tonight→that night, tomorrow→the next day.

yesterday→the day before, the day after tomorrow→in two days.

③其它變化：

this→that these→those here→there

come→go

句式的改變：

①直接引語是陳述句加"that"可以省去。例：

He said, "My sister was here three days ago."→

He said that his sister had been there three days before.

②直接引語是一般疑問句，變成用if/whether引導的賓語從句，人稱時態(tài)等作相應改變。

Mother asked me, "Did you buy any meat for lunch?"→

Mother asked me if/whether I had bought some meat for lunch.

③直接引語是特殊問句，變成由原來疑問詞一樣的連接詞引導的賓語從句，時態(tài)人稱等作相應改變。例：

"What do you do?" he asked me.

He asked me what I did.

④直接引語是選擇問句變成由whether或if引導的賓語從句。

"Do you like English or Chinese?" He asked me.

He asked me whether I liked English or Chinese.

語法：被動語態(tài)

1.英語中動詞有兩種語態(tài)：主動語態(tài)和被動語態(tài)

主動語態(tài)表示主語是謂語動詞動作的執(zhí)行者，被動語態(tài)表示主語是謂語動詞動作的承受者。

當我們強調誰是某個動作的執(zhí)行者，即"誰做了某種事情"時，用主動語態(tài)。

eg: Daniel bought a new computer 丹尼爾買了一臺新電腦。(不是別人)

如果主語不是動作的執(zhí)行者，而是動作的承受者時，就是被動語態(tài)。

eg: A new computer was bought by Daniel 一臺新電腦被丹尼爾買了。

被動語態(tài)的謂語由be + 動詞的過去分詞構成，其中be是助動詞，隨時態(tài)改變。

一般現(xiàn)在時的被動語態(tài)由"am / is / are +動詞的過去分詞"構成。

一般過去時的被動語態(tài)由"was / were +動詞的過去分詞"構成。

2.被動語態(tài)的用法：

當不知道或沒必要說明動作的執(zhí)行者時，用被動語態(tài)。

eg: Rice is grown in South China. 華南種植水稻。(沒必要說明是誰種)

This bridge was built 100 years ago. 這座橋是100年前建的。(不知道誰建的)

Passive voice with 'by'

在被動語態(tài)中，如果我們也要把動作的執(zhí)行者表達出來的話，我們就在被動句子的后面，用 "by+動作的執(zhí)行者(賓格)"來表示。

e.g. Jack broke the window. (主動語態(tài))

The window was broken by Jack. (被動語態(tài)) 窗戶是被杰克打碎的。

Meals are cooked by her mother at home. 在家飯是她母親燒的。

The book was written by him several years ago. 這本書是他幾年前寫的。

3.難點：

1). 當一個含有復合賓語(賓語+賓補)的句子變?yōu)楸粍诱Z態(tài)時， 只能把賓語變?yōu)楸粍诱Z態(tài)的主語，賓補還放在原來的位置。

e.g. We call him Xiao Wang.--- He is called Xiao Wang.

He cut his hair short.--- His hair was cut short.

2). 帶雙賓語的動詞變?yōu)楸粍诱Z態(tài)時， 常常把間接賓語變?yōu)楸粍诱Z態(tài)的主語;如果直接賓語變?yōu)楸粍诱Z態(tài)的主語時，間接賓語前要加介詞to或 for.

e.g. Someone gave the boy an apple.-- The boy was given an apple.

An apple was given to the boy.

His mother bought a present for him.--- He was bought a present.

A present was bought for him.

3). 在let, hear, watch, see, help, have 等詞的句子中，主動語態(tài)不加to, 被動語態(tài)要加 to.

e.g. The boss makes us work 12 hours a day.--- We are made to work 12 hours a day.

They heard the children sing that morning.--- The children were heard to sing that morning.

⑤直接引語是祈使句，根據(jù)說話語氣變成ask/tell/order warn sb. to do sth.的結構。例：

She said to me, "Stand up."→

She asked me to stand up.

Father said to his son, "Don't play football in the street."→

Father told his son not to play football in the street.

英語的知識難點比較多，但是英語對我們又是非常重要，和我們的生活有著息息相關的關系，所以說學好英語知識還是很有必要的。希望通過以上內容的學習，大家對英語知識有更多的了解。