Period 3 Grammar
1. 请比较下列几组句子，找出它们的省略规律（括号中为可省略部分）。
1) a. I like English and (I like) Math.
b. My watch works well, but hers donesn’t (work well)
2) a. When (water is) pure，water is a colorless liquid.
b. The letter is to be left here until (it is) called for.
3) a. Answer these questions，if (it is) possible without referring to the book.
b.When (it is) necessary you can help us to do something.
4) a. It is a pity (that) you can’t pass the exam.
b. It is the third time (that) I have got the scholarship.
5) a. This is the pen (that/ which) I bought this morning.
b. That is the naughty boy (whom/that) we talked about last week.
6) a. He told me (that) he loved me.
b. My teacher suggested (that) we should work hard.
7) a. You may go online if you like to (go online).
b. She wants to come but her parents won’t allow her to (come).
