《朗文·外研社·新概念英语2（教师用书）》除保留原版的精华外，又增加了以下重要特色：专为中国的英语学习人士而改编，根据中国读者的需要增添了词汇表、课文注释、练习讲解和课文的参考译文；剔除了所有过时内容，其中过时的课文由新课文取代，并配以全新的练习和插图； 对原有教学法进行调整，更利于学生加强交际能力。内容更简洁精练，取消过去单独出版的繁琐补充材料，将其精华纳入主要教材；版面加大，方便翻阅；每课书相对独立，以利课堂教学。

Key to Pre-unit Test 1

Lesson1　A private conversation—Word order in simple statements

Lesson2　Breakfast of lunch?—The present，simple and continuous

Lesson3　Please send me a card—The simple past

Lesson4　An exciting trip—The simple past and the present perfect

Lesson5　No wrong numbers—The indefinite and definite articles

Lesson6　Percy Buttons—The indefinite and definite articles

Lesson7　Too late—The past continuous

Lesson8　The best and the worst—The comparison of adjectives

Lesson9　A cold welcome—Prepositions of time

Lesson10　Not for jazz—The passive

Lesson11　One good turn deserves another—Review of tenses

Lesson12　Goodbye and good luck—The simple future

Lesson13　The Greenwood Boys—The future continuous

Lesson14　Do you speak English？—The past perfect

Lesson15　Good news—Indirect statements

Lesson16　Apolite request—Type l conditional statements

Lesson17　Always young—Must and Have to

Lesson18　He often does this!—Have(possession/ordinary verb)

Lesson19　Sold out—Can and May

Lesson20　One man in a boat—The gerund after prepositons

Lesson21　Mad or nor—Can and may

Lesson22　Aglass envelope—Verds followed by prepositions：Of，From，Inand On

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