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句型大本营

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/16 01:57:00
The peanut was safely removed by the doctor. (改为被动语态) The doctor . I joined the English culb 3 years ago. (改为现在完成时) I the English club 3 years.
解题思路: 句型转换
解题过程:
The peanut was safely removed by the doctor. (改为被动语态)同学你好,这个句子应该是变为主动语态。它本身就是被动语态的。
The doctor safely removed the peanut .
被动语态变为主动语态应考虑以下几点: 一、主语和宾语要换,动词的被动态(be done)改成主动态(do),by后面跟的是主动者,若是人称代词,还要把宾格变为主格。 二、要注意let ,make等在用于被动语态中接动词要用带to不定式,而在主动语态中接动词则省略to;
三、双宾语也要注意;
四、时态要一致。 如:1.I am let to do my homework by her(my teacher). She lets me do my homework. 2.The pen was given to Mary by me yesterday. I gave Mary the pen yesterday. 或I gave the pen to Mary yesterday.
把主动语态的句子变为被动语态的方法是:
(1)把原句中的宾语变为主语
(2)动词改为被动形式,即be+过去分词 (3)原来的主语,如果需要的话,放在by后面,如果没必要,可省略。
I joined the English culb 3 years ago. (改为现在完成时)
I have been in the English club for 3 years.
join 是一个非延续性动词,不可以在现在完成时中和for引导的表示段时间的时间状语连用。
要把它改为相应的延续性动词。我们通常是把join改为be in。
英语动词根据词义可分为两种,一种是延续性的,一种是终止性的,终止性动词(也可称为非延续性动词、瞬间动词、或点动词),如begin, start, die, buy, leave, come等,表示动作的发生与结束于一瞬间完成,不能再延续,所以它的现在完成时不能和表示延续的时间状语连用,即不能与表示一段时间的状语,for+时间段, since+时间点/从句连用,也不能用在how long引导的特殊疑问句中。 • I’ve left Shanghai for three days.(×) • I’ve been away from Shanghai for three days.(√). • I left Shanghai three days ago. (√)
终止性动词要表示持续时,可用以下方法:
⑴ 将时间状语改为时间段+ ago,句中谓语动词用一般过去时。 eg. My brother joined the army two years ago. 我弟弟参军两年了。
⑵ 若保留for+时间段,since+时间点/从句,或用在 how long句型中,则需将终止性动词改为相应的状态动词或延续性动词。 常见终止性动词与延续性动词(或状态动词)的对应关系如下: • open---be open die---be dead • close---be closed become---be • borrow---keep begin/start---be on • put on---wear leave---be away (from) • buy---have sleep /fall asleep---be asleep • end/finish---be over catch a cold---have a cold • come back—be back get up---be up • come/go/arrive/get/reach/move---be in/at • join the army---be in the army/ be a soldier • join the Party---be in the Party /be a Party member →My brother has been in the army for two years. →My brother has been a soldier for two years.
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最终答案:略