Question

1.The student of Class Three have already cleaned their classroom.( 改为否定句)

The student of Class Three ______ cleaned their classroom .

2. Her grandfather has been dead since2007 .（对画线部分提问）

________ ______ has her grandfather been dead?

3.The film began about 20 minutes ago．You are late．(改为同义句)

The film has ________ ________ for about 20 minutes．You are late.

4.我们应该循环利用塑料袋而不是扔掉它们。(完成译句)

We should reuse plastic bags throwing them away.

Answer 1

1.haven’t ,yet

2.How long

3.been on

4.instead of

【解析】

1.现在完成时的否定形式是：主语+haven’t /hasn’t+动词的过去分词+其他，另外如果有already，要变成yet。

2.画线部分是“since 2007”自从2007年到现在，是对时间段进行提问，所以用how long提问。

3.begin是非延续动词，此处后面接一段时间，要用延续动词，be on表示上演的意思，是延续动词。

4.instead of是介词短语，意思是“代替… ” “而不….”