Ⅰ. Comic strip & Welcome to the unit
1.Let’s have a hamburger.
Let’s play football, shall we ?
Let us see your picture ,will you ?
2.be hungry be full
3.I need a lot of energy.
need to do sth. He needs _to buy (buy) a dictionary.
need do sth. ( need作情态动词，用于疑问句和否定句)
You needn’t answer the question. = ( You don’t need to answer the question.)
