First, the ingredients are insufficient. Such as the subject.

Many years later, we still miss this wonderful time. (lack of subject. )

With his help, I have made great progress in my study. (lack of subject. It can be said that his help has made great progress in my study; With his help, my study has made great progress. )

After watching Leap, I got a profound education. Who is educated? No theme)

Second, semantic repetition (two similar words or words used at the same time. )

1. Buy a refrigerator and send a kettle for free. Gifts are free. )

There is one thing that I will never forget. (Repeat for life, for life. )

3. In order to prevent the large-scale spread of H7N9 epidemic, governments at all levels took timely measures. (prevent, not repeat, both appear at the same time to change the meaning of words and remove one. )

Third, improper collocation of words.

In a sentence, some words can't match or are unreasonable in meaning, which violates the habit of language and causes sick sentences. Including the improper use of some related words.

For example, "at the party, we heard sweet songs and beautiful dances." Obviously, "hearing" and "dancing beauty" cannot be matched, and should be changed to "at the party, we heard sweet songs and saw beautiful dances."

For example, "if we live a rich life, we shouldn't waste it." Obviously, the use of related words is wrong and should be changed to "even if we are rich, we should not waste it."

Fourth, inconsistency.

In the same sentence, the meanings expressed before and after are contradictory and ambiguous.

For example, "I guess he must have done this problem wrong." The first half of the sentence is not sure enough, and the second half is sure that he is wrong, so there is a contradiction. What happened? People don't understand. It can be changed to "I guess he did this problem wrong." Or "I conclude that he did this problem wrong."

Fifth, the word order is reversed.

Under normal circumstances, the word order in a sentence is fixed, the word order changes, the position is reversed, the meaning of the sentence will change, and even a sick sentence will be caused.

For example, "China people are very interested in me." The positions of "Chinese" and "I" are reversed and should be changed to "I am very interested in Chinese."