我們知道， think, assume, claim是議論文中常用引出觀點的動詞。在實際作文中，同學們往往認為幾個詞的意思是一樣的，完全可以代換，所以拿過來就用。甚至還有同學把consider也拿過來與之混用。我們首先還是從定義來看這幾個詞的不同：

Think: to have opinion or belief about sth.

翻譯為“認為”，通常接賓語從句來表達比較確定的觀點。

Assume: to think or accept that sth is true but without having proof of it.

翻譯為“假設、假定”，是否有事實依據是不確定的。

Claim: to say sth is true although it has not been proved and other people may not believe it.

翻譯為“聲稱”，用這個詞往往意味著不贊同緊跟其后的觀點，所以很少用作 ‘I claim that…

Scientist are claiming a breakthrough in the fight against cancer, but in fact, ….

所以 ‘It is claimed that’ 通常翻譯為“有報道稱。。?！?。和‘it is reported that ’的區(qū)別在于后者翻譯為“據報道”，往往代表著作者贊同報告的內容，

Consider: to think about sth carefully, especially in order to make a decision

翻譯為“考慮”，一般不用作引出觀點，看個例子：

We are considering buying a new car.

所以，提醒您，千萬不要在雅思大作文的第一段（觀點表達段）就因為用詞把握不準而導致對整篇文章的低分印象。

四、表“建議”的詞匯后面忘記用虛擬從句

這是摘自學生作文中的一個病句：

I suggest he continues his study instead of working after graduation from high school.

因為 ‘suggest’翻譯為“建議”，所以后面的從句應該用虛擬語氣，黑體部分應該改為 “(should) continue”

所以提醒您，一定要牢記以下常見表“建議”的詞匯，而且要記住這些詞接從句時要用虛擬語氣：

Recommend, suggest, advise

五、such as與for example的混用

我們知道，在表示舉例子的時候，such as 與like是完全等同的，如：Wild flowers such as/like orchids and primroses are becoming rare.

但是同學們對于Such as、for example 的把握還是不夠準確。我們都知道，后者接句子前者接詞語表示舉例子。于是就有了下面的寫法：

There is a similar word in many languages, such as in French and Italian.

這里的such as改為 for example為好，因為“in French and Italian”其實是“there is a similar word in French and Italian”的簡化，所以要用 for example來引出例證。再來看幾個類似的例子：

It is possible to combine computer science with other subjects, for example physics.

最后，提醒各位考生，在平時的寫作中絕對不能放過任何的模棱兩可，只有平時“斤斤計較”才能做到“寫作使人精確”。