Question

【题目】 填入所给单词的适当形式

【1】At times this balance of nature ___________ (disturb), which results in a number of possibly unforeseen effects.

【2】 With his mind _____________ (focus) on the things not related to his studies, his marks have fallen rapidly.

【3】When _____________(compare) with the size of the whole earth, the highest mountain doesn’t seem high at all.

【4】 Students should be encouraged_____________(present) their own opinions, whether right or wrong.

【5】 Walking along the river bank one day, I found a child ___________ (struggle) in the water.

【6】The plan__________ (design) to encourage the employees to improve their work turned out to be a success.

【7】The mobile phone _____________(guarantee) for at least five years, but it went wrong only one year later.

【8】 It’s high time someone ______________(protest) against human rights violations.

【9】A sheep ___________ (feed) on this kind of special grass usually grows much faster than one on ordinary.

【10】Some students have no idea of why they are studying, so they are _________ (aim) most of the time.

Answer 1

【答案】

【1】 is disturbed

【2】focused

【3】compared

【4】to present

【5】struggling

【6】designed

【7】was guaranteed

【8】protested/should protest

【9】feeding

【10】aimless

【解析】

试题分析：填入所给单词的适当形式

【1】 is disturbed 句意：有时候自然的平衡被干扰。用一般现在时态的被动语态，故填is disturbed。

【2】focused with的独立主格结构，with+名词/动词+过去分词，表示被动关系。故填focused。

【3】compared compared to/with---，与---相比较，故填compared。

【4】to present 固定结构：encourage sb to do sth.鼓励某人做某事，故填to present。

【5】struggling find sb. doing sth.发现某人正在做某事，表示主动关系，故填struggling。

【6】designed 此处是过去分词作后置定语，故填designed。

【7】was guaranteed 句意：移动手机至少被保证5年，但仅仅一年后它就坏了。可知用一般过去时态的被动语态，故填was guaranteed。

【8】protested/should protest 固定句式：It’s high time that 主语+过去式（should+动词原形）+---，现在是该做某事的时间了。故填protested/should protest

【9】feeding 句意：以吃这种草为生的绵羊。现在分词作后置定语，表示主动关系，故填feeding。

【10】aimless 句意：他们多数时候是没有目标的。用形容词形式，故填aimless。

【知识归纳】

1.It is the first(second---)time that 主语+现在完成时态+其他。意思是：第几次做某事了。如果把is改成was，则后面用过去完成时态。It’s the third time that I have come to the Summer Palace.这是我第三次来到颐和园。

2.It’s (high) time that 主语+一般过去时态+其他。现在是该做某事的时间了。It’s high time that we had lunch.现在是我们该吃午饭的时间了。

3. It is/has been+一段时间+since 主语+一般过去时态+---。自从---有多长时间了。在这个句型中since引导时间状语从句，从句用一般过去时态，分两种情况：（1）如果从句的动词是终止性动词leave/come/---，则表示“从动作开始到现在多长时间了。”It is three years since he began to smoke.他已经吸烟三年了。（2）如果从句的动词是持续性动词stay/smoke/live---，则表示“从动作结束到现在多长时间了”。 It is three years since he smoked.他戒烟三年了。