10．ask sb.(not) to do sth. 意为“让某人(不要)做某事”，其中ask sb.后应接动词不定式，如：

Ask your friends to guess what is in it. (L44)

9．like to do sth./like doing sth.意为“喜欢做某事”，如：Li Lei and his friends like to play in the tree house. (L 43)前一种句型侧重具体的一次性的动作；后一种句型侧重习惯性的动作，试比较：

Tom likes swimming, but doesn’t like to swim this afternoon.

8．It’s time to do…/ It’s time for sth. 意为“该做……的时间了”，其中to后须接原形动词，for后可接名词或V-ing形式。如：It’s time to have supper. =It’s time for supper.

7．What about…？/How about…？意为“……怎么样？”是用来询问或征求对方的观点、意见、看法等。about为介词，其后须接名词、代词或V-ing等形式。如：What/How playing chess?

6．help sb. (to) do sth./help sb. with sth.意为“帮助某人做某事”，前者用不定式作宾补，后者用介词短语作宾补，二者可以互换。如：Let me help you find it.(L42)/Let me help you with it.

5．Let sb. do sth. 意为“让某人做某事”，人后应用不带to的动词不定式，其否定式为Don’t let sb，do sth.，或Let sb. not do sth. 另外，Let’s 与Let us的含义不完全相同，前者包括听者在内，后者不包括听者在内，如：Let’s go for a walk./Let us try once more, please.

4．One…, the other…/One is…and one is…意为“一个是……；另一个是……”，必须是两者中。如：One is red and one is grey.(L50)或 One is red,, the other is grey.

3．take sb./ sth. to…意为“把……(送)带到……”，后常接地点，也可接人。如：

Please take the new books to the classroom.

2．give sth. to sb./ give sb. sth. 意为“把……给……”，动词give之后可接双宾语，可用这两种句型；若指物的宾语是人称代词时，则只能用give it/ them to sb. 如：

His parents give him a nice purse./His parents give a nice purse to him. Give it to Mr Hu.(L57)

1．I think…意为“我认为……”，是对某人或某事的看法或态度的一种句型。其否定式常用I don’t think…，如：I think he’s Mr Zhinag. (L17)I don’t think you are right.