简单过去时

To form the negative use BE + not

was/were not ↔ wasn‘t/weren’t

To form the negative use ‘did not’ + verb

主语执行操作，宾语代词接收动作或动作结果

Use ‘did’ to form a question in the past.

Did I verb…?

Start with ‘did’ + subject = verb.

Put the question word in front.

	near	far
singular	this	that
plural	these	those

Add -er to the end of an adjective.

than

• +er
• 元音辅音结尾 double consonant +er
• y结尾 -y+er
• Use ‘more’ for longer words.
• There are some irregulars. ——good/better, bad/worse

Use adjective+er and ‘than’.

verb + adjective(er)

An infinitive is a verb in simple form with ‘to’.

Use an infintive after ‘want’ , ‘like’ , and ‘need’.