Question

【題目】 填入所給單詞的適當形式

【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】

試題分析：填入所給單詞的適當形式

【1】 is disturbed 句意：有時候自然的平衡被干擾。用一般現(xiàn)在時態(tài)的被動語態(tài)，故填is disturbed。

【2】focused with的獨立主格結(jié)構(gòu)，with+名詞/動詞+過去分詞，表示被動關(guān)系。故填focused。

【3】compared compared to/with---，與---相比較，故填compared。

【4】to present 固定結(jié)構(gòu)：encourage sb to do sth.鼓勵某人做某事，故填to present。

【5】struggling find sb. doing sth.發(fā)現(xiàn)某人正在做某事，表示主動關(guān)系，故填struggling。

【6】designed 此處是過去分詞作后置定語，故填designed。

【7】was guaranteed 句意：移動手機至少被保證5年，但僅僅一年后它就壞了�？芍�用一般過去時態(tài)的被動語態(tài)，故填was guaranteed。

【8】protested/should protest 固定句式：It’s high time that 主語+過去式（should+動詞原形）+---，現(xiàn)在是該做某事的時間了。故填protested/should protest

【9】feeding 句意：以吃這種草為生的綿羊。現(xiàn)在分詞作后置定語，表示主動關(guān)系，故填feeding。

【10】aimless 句意：他們多數(shù)時候是沒有目標的。用形容詞形式，故填aimless。

【知識歸納】

1.It is the first(second---)time that 主語+現(xiàn)在完成時態(tài)+其他。意思是：第幾次做某事了。如果把is改成was，則后面用過去完成時態(tài)。It’s the third time that I have come to the Summer Palace.這是我第三次來到頤和園。

2.It’s (high) time that 主語+一般過去時態(tài)+其他�，F(xiàn)在是該做某事的時間了。It’s high time that we had lunch.現(xiàn)在是我們該吃午飯的時間了。

3. It is/has been+一段時間+since 主語+一般過去時態(tài)+---。自從---有多長時間了。在這個句型中since引導(dǎo)時間狀語從句，從句用一般過去時態(tài)，分兩種情況：（1）如果從句的動詞是終止性動詞leave/come/---，則表示“從動作開始到現(xiàn)在多長時間了�！盜t is three years since he began to smoke.他已經(jīng)吸煙三年了。（2）如果從句的動詞是持續(xù)性動詞stay/smoke/live---，則表示“從動作結(jié)束到現(xiàn)在多長時間了”。 It is three years since he smoked.他戒煙三年了。