When there are coordinate phrases in a sentence, there may be three situations:

1: contains coordinate components. For example, "I bought some vegetables, cauliflower and Chinese cabbage in the street", and there is an inclusive relationship between "vegetables" and "cauliflower and Chinese cabbage", which cannot be juxtaposed.

2. Word order of coordinate components. For example, "each of us has to go through childhood, middle age, adolescence, youth and old age", then "middle age" can only be placed after "youth".

3. Collocation of coordinate phrases before and after the question. This is the most important test method of coordinate phrases in college entrance examination. For example:

During the Spring Festival this year, 2 10 fire engines and more than 3,000 fire officers and soldiers in this city gave up their vacations and always stuck to their respective duty posts. (National Volume 1999)

Analysis: ① "①“2 10/0 fire engine, more than 3000 fire officers and soldiers" is a coordinate phrase, but only "officers and soldiers" can "give up their vacation" and "fire engines" can't;

Exercise:

An official of the China Commission of Science, Technology and Industry for National Defense said that the successful launch, application and operation of the China-Pakistan Earth Resources Satellite have made many countries in the world show great interest in China's Earth satellite.

② The South-to-North Water Transfer Project will establish a good operation, management and financing mechanism to guide all sectors of society to invest funds and form a virtuous circle of water conservancy construction and water use.

(3) Vigorously strengthen professional ethics education, strive to improve employees' professional skills, and pay attention to cultivating employees' honesty, kindness, professionalism and pragmatism.

Second, when there are positive words and negative words in the sentence.

When there are words such as "whether", "whether", "good or bad", "good or bad" and "success or failure" in the sentence, the positive and negative overlapping words can be tested. Generally, the positive and negative words in a sentence should be echoed, otherwise it will be regarded as a sick sentence. At the same time, we should also pay attention to that there are bright echoes and dark echoes. Explicit echo refers to words with affirmation and negation before and after, while implicit echo refers to words without affirmation and negation after, but you can understand the meaning of affirmation and negation from the semantic point of view.

For example, the quality of machinery is an important condition to ensure production safety. The former "good or bad" has two sides, and the latter "whether" should be added before "production" to form two sides.

Exercise:

Whether we can cultivate new people with "four haves" is a major event related to the future and destiny of our party and country, and it is also the fundamental task of the education front.

The key to the rapid development of electronic industry and its extensive penetration into all walks of life lies in strengthening training and bringing up a group of professional and technical talents.

(analysis: 1. The "can" in ② and the "can" in ③ are considered as ill sentences, because there are no words to express positive and negative responses. )