一. 主题句作文
范文1
Title: Dictionary
  (1) The dictionary is a living teacher.
  (2) Skills will develop with your constant use of various dictionaries.
  (3) But you should have one thing in mind.

Dictionary
The dictionary is living teacher. Whenever you come across a new word, just consult it and you will get a clear definition from it. Every student, no matter attending school or self-taught, should always have a dictionary at hand. As a study aid, it is convenient, inexpensive and allknowing.

Skills will develop with your constant use of various dictionaries The more you use them, the more familiar you will become with them. Sooner or later, you will be quite skilled in finding the page, scanning the entries and locating the exact meaning of the new words.

But you should have one thing mind. As a language student, you should never depend too much on dictionaries. Basic language skills do not come from dictionaries, but from your practice. For some extensive reading, for example, you need not account to a dictionary every time you encounter a new word, you could just guess the meaning and skip it. Learn the language by listening, speaking, reading and writing more, and that is the only way to the mastery of a language.

译文
字典
字典是一个活老师。当你遇到新的单词时,可以查字典你会找到非常清楚的定义。不论是在校学习还是自学,每个学生都应该手头准备一本字典。作为一个学习工具,字典非常方便、便宜而且知识全面。
经常使用各种字典你的查字典能力就能够提高。用的次数越多,你就会越熟练。你会非常熟练地找到需要的页面,浏览目录并快速找到你需要的字。

但是你需要记住一件事情。作为学语言的学生,不能太依赖字典。语言技能不是从字典中来,而是通过不断的练习。比如在泛读时,你不需要一遇到生词就查字典而是通过猜测它的意思并跳过它。通过听说读写的练习来学习语言,只有这样你才能真正掌握一门语言。

范文2
Directions:
Title: Help Children to Be Independent
 The topic sentence is provided as follows:
(1) Today in China, many families have only one child.
(2) There are some ways to help children to be independent.
(3) To be independent is good for the children
You should write 160-200 words.

Help Children to Be Independent
Today in China, many families have only one child. So the children usually doted upon by all family members. Gradually some of them get used to depending on their parents and lack the ability to solve problems independently.

There are some ways to help children to be independent. Firstly, the child should have a chance to see the world around him. He must understand that therere various competitions in this world, and everyone can find his right position in the society only by individual efforts. Secondly, the parents should give the child enough help to make him feel comfortable. Its impossible to ask a child not to depend on parents at once. A child needs help from the beginning. Without any help, the child may lose his faith. Thirdly, parents should let his child make decisions, which can temper his ability to deal with problems. A child should be praised when he is successful or when he fails.

To be independent is good for the children, because no parents can accompany the children for the whole life. It is the child himself who is responsible for her own fate. Only an independent person can live and succeed in this world. 

译文
帮助孩子独立起来

现今的中国,很多家庭都是独生子女家庭。所以孩子受到了所有家庭成员的宠爱。渐渐地他们习惯了依赖父母,缺乏了独立解决问题的能力。

有一些方法可以帮助孩子独立起来。第一,孩子应该有机会认识身边的世界。他必须知道世界上有各种各样的竞争,只有通过个人的努力才能找到自己的位置。第二,父母应该给他们提供帮助。开始的时候孩子都需要帮助,离开了父母的帮助他们会失去方向。第三,父母应该让孩子做决定,以此来锻炼他们处理问题的能力。当孩子成功或失败时他们都需要鼓励。

独立对于孩子是有利的。因为父母不能陪伴他们一辈子。他们要对自己的命运负责。只有独立的人才能够在这世界生存并取得成功。