make sure each word group you have punctuated as a sentence contains a grammatically complete and independent thought that can stand alone as an acceptable sentence.
还有一种情况是一个完整的单句带有有连词，却没有主句。或者将一个主从句断裂开了。第二个例句就是此类。 -------------------------------------------------------------------------------- sentence fragment tests of the shroud of turin have produced some curious findings. for example, the pollen of forty-eight plants native to europe and the middle east.
[2nd sentence = fragment]
改正： tests of the shroud of turin have produced some curious findings. for example, the cloth contains the pollen of forty-eight plants native to europe and the middle east. --------------------------------------------------------------------------- 原句： scientists report no human deaths due to excessive caffeine consumption. although caffeine does cause convulsions and death in certain animals. 改正： [2nd sentence = fragment] scientists report no human deaths due to excessive caffeine consumption, although caffeine does cause convulsions and death in certain animals.
2. sentence sprawl
too many equally weighted phrases and clauses produce tiresome sentences.
过尤不及，虽然我们强调句子要有一定的复杂性，但是实际上老米教授、专家从来不主张过长的句子，读者也不爱看。不过，要达到精确而又不啰嗦的表达，的确是有难度的。 -------------------------------------------------------------------------------- sentence sprawl the hearing was planned for monday, december 2, but not all of the witnesses could be available, so it was rescheduled for the following friday, and then all the witnesses could attend.
[there are no grammatical errors here, but the sprawling sentence does not communicate clearly and concisely.]
改正： the hearing, which had been planned for monday, december 2, was rescheduled for the following friday so that all witnesses would be able to attend.
3. misplaced and dangling modifiers
place modifiers near the words they describe. be sure the modified words actually appear in the sentence.