1)并列谓语的时态一致。 【例如】Yesterday I went shopping, bought some books and had dinner at a good restaurant. The soldier looked at him, exchanged glances with his comrade and took out the gun. 2)主从复合句的时态一致
1)很多以a?开头的形容词,如asleep, afraid, awake, alone, aware, alive, ablaze, alike等,一般只作表语。 【例如】 He was so tired that he soon fell asleep. Whether he was alive or dead in the earthquake is still unknow
1) should和ought to表示责任、建议或劝告,翻译为“应该”,后者语气强一些。 【例如】 You should listen to the doctor's advice if you want to recover soon. Such things ought not to be allowed. 2) should接动词的