主謂一致:The number of sth is decreasing.
A great number of sth are…
時態(tài)語態(tài):
描述圖畫用進行時: doing
As is shown in the picture, there is sb doing sth, suggesting sth/with sb doing sth.
描述圖表用過去時: 完成時
As is illustrated by the chart, there was an obvious increase/a dramatic decrease in the number of sth from 1998 to 2008.
There has been an increase…(from 1998 to 2013)The number of sth has been increasing…
預測趨勢用一般將來時: will
The situation will develop for the/a better/worse direction.
名詞的數:
phenomenon phenomena/phenomenons
medium media
bacterium bacteria
介詞搭配
insist on persist in
I insist that we should do sth.
I insist on doing sth. I persist in doing sth.
單詞大小寫及拼寫錯誤
題目的大小寫(除冠詞、連詞和介詞外, 其他詞原則上都應該第一個字母大寫);Human Needs and Wants
每句話的第一個字母和直接引語的第一個字母要大寫;He said, “He is going to Shanghai next week”。
專有名詞(人名,地名)和縮寫字母要大寫;
頭銜在專有名詞前要大寫,在專有名詞后則小寫;Captain Smith——Smith, the captain
Uncle George——George, my uncle
標點符號
寫文章時,切忌從頭到尾只用逗號的現象;要正確使用逗號和分號。