強調形式分五類：

1、對動詞進行強調(do/does/did + V)

      Sitting infront of the screen does damage the eye and physical posture ofchildren. 

      Some people dobelieve that the overuse of chemicals (Fer tilizers and pesticides) dopose a threat to the well-being of local people.

2、雙重否定可表強調

      We cannot denythat receiving the distance education is never without drawbacks.

      It is notunrealistic for the government to reduce the amount of waste.

3、比較狀語可表強調 

      Nothing is more important than to develop the children’s ability of learning on theirown. 

      Students wouldhave greater capability to deal with their academic life than thosewho do not have the gap year spent in working or travelling.

      Nothing is moreimperative than to learn from the past. 

4、what引導的主從可表強調 

      What is relatedto the economic collapse is the failure of the government’spolicies.

      What really matters iscooperation. 

5、強調句型可表強調

      It is/was + 被強調的成分 + that/who, 所強調的可以是單詞、短語，也可以是從句，但必須保證其結構完整。被強調的成分可以是主語、表語、賓語、同位語、狀語等，但不能是定語或謂語。

      It is thegovernment that should shoulder the responsibility toprotect the endangered species.(對主語強調) 

      It is teacherswho are competent to instruct their students to be a goodsocial member.(對主語強調) 

      It is throughjob training that the young unemployed would have theopportunity to get jobs again.(對狀語強調)

      It is the largecompany which the public think polluting the watersupply.(對賓語進行強調)

      注：強調句中的時態要根據原句的時態而定。即原句為過去某種時態，則強調句中的be就用過去時;原句為現在的某種時態，強調句中就用be的現在時態。有時還可以用It mightbe/must have been/can’t be…that等句式。

例句：

      It is becausepeople are stuck in the traffic that they spendlonger time in travelling.

      It might be thelack of guidance of parents that leads to the going astray of youngpeople. 

      強調句的判斷：強調句型可以通過“還原法”來進行判斷，若刪除強調句型結構后，句子能還原為一個完整的句子，就是強調句。強調句可以看作是用固定的表達-It is/was…that(which, who, whom, where, when)…, 將句子的某個成分(除了謂語)進行重點強調。但是去掉這個固定的句型部分，句子本身并無任何變化。

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